https://www.jk-sci.com/products/s57c4x-11242 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5649a4ab0cd7c6e6fe893234c18df02e.jpg?v=1791383763 Sorafenib Impurity 2(PAPE-ethyl carbamate), Purity: 99.6% | 2206827-12-3 Sorafenib Impurity 2(PAPE-ethyl carbamate)|C4X-11242|2206827-12-3 https://www.jk-sci.com/products/s57c4x-113938 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0851f3a3-48ad-4743-a7af-d8708cadf49c.png?v=1791383070 Cefixime Impurity 38, 93.50% Cefixime Impurity 38|C4X-113938 https://www.jk-sci.com/products/s57c4x-113549 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_6bca9626-2c61-4c42-ae4a-113e9c808801.png?v=1791383216 Olaparib Impurity 49, 98.20% Olaparib Impurity 49|C4X-113549 https://www.jk-sci.com/products/s57c4x-113260 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/272656_635d0b0a-824b-4bfb-aa6c-c2144fed4cf3.png?v=1791383322 Atorvastatin Impurity 60, 99.10% | 124401-38-3 Atorvastatin Impurity 60|C4X-113260|124401-38-3 https://www.jk-sci.com/products/s57c4x-114020 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/299604d0d53c4db6deca0dc38aec81d5_85780cad-e44f-4b60-901f-d9fc87d09e5c.jpg?v=1791383029 Lenvatinib Impurity 20, 99.50% | 417721-36-9 Lenvatinib Impurity 20|C4X-114020|417721-36-9 https://www.jk-sci.com/products/s57c4x-11414 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ae45090f9d6520cc71ef2602e89f67c6.jpg?v=1791382982 Aprepitant Impurity 4, 98.20% | 172822-29-6 Aprepitant Impurity 4|C4X-11414|172822-29-6 https://www.jk-sci.com/products/s57c4x-113217 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b41873bbae1624a69b2fc65e906107b9.jpg?v=1791383356 Atorvastatin Epoxy Tetrahydrofuran Impurity, 99.00% | 873950-19-7 Atorvastatin Epoxy Tetrahydrofuran Impurity|C4X-113217|873950-19-7 https://www.jk-sci.com/products/j5307401 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/501ec81693e1e0c535c29d81ae8f16ba.jpg?v=1791415617 Boc-2-bromo-D-phenylalanine, Purity by HPLC ≥ 99% | 261360-76-3 Boc-2-bromo-D-phenylalanine|07401|261360-76-3 https://www.jk-sci.com/products/j5307438 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9e83e77b3aa06bf58b108730d503d6fc.jpg?v=1791415548 b-(3-Thienyl)-L-alanine, Purity ≥ 98% | 3685-51-6 b-(3-Thienyl)-L-alanine|07438|3685-51-6 https://www.jk-sci.com/products/s57c4x-1144110 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f6e8397663b34013ba48ecaa0fd771ab.jpg?v=1791382964 Sitagliptin Impurity 110, 93.50% | 1305324-02-0 Sitagliptin Impurity 110|C4X-1144110|1305324-02-0 https://www.jk-sci.com/products/s57c4x-114427 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5ba5cc9944b1a849da144b8e046d3a46_6b4931dd-1b1a-4ca2-aa30-13992a797cfb.jpg?v=1791382941 Sitagliptin Intermediates Impurity, 96.60% | 762240-92-6 Sitagliptin Intermediates Impurity|C4X-114427|762240-92-6 https://www.jk-sci.com/products/s57c4x-114446 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1020872_4b4198eb-b52c-4c90-b690-17636f36c853.png?v=1791382925 Sitagliptin Monophosphate Monohydrate, 99.20% | 654671-77-9 Sitagliptin Monophosphate Monohydrate|C4X-114446|654671-77-9 https://www.jk-sci.com/products/s57c4x-114476 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/337797_8fc11456-9166-4099-be92-5a1c471584be.png?v=1791382905 Sitagliptin Impurity 76, 99.90% | 209995-38-0 Sitagliptin Impurity 76|C4X-114476|209995-38-0 https://www.jk-sci.com/products/j5307376 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/259c63311f06e701d509c0251305a4da.jpg?v=1791415656 3-(4-Thiazolyl)-L-alanine, Chiral HPLC ≥ 99% (ee) || Purity by HPLC ≥ 98% | 119433-80-6 3-(4-Thiazolyl)-L-alanine|07376|119433-80-6 https://www.jk-sci.com/products/s57c4x-113868 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0cbe2205b41989f6294c10879e6ccbdd.jpg?v=1791383107 Dapagliflozin Impurity 68, 96.10% | 1103738-29-9 Dapagliflozin Impurity 68|C4X-113868|1103738-29-9 https://www.jk-sci.com/products/s57c4x-11312 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c87d45109b57899ade475d13a71462c2_754a3387-c5c9-4c9e-a580-85eccfaa099a.jpg?v=1791383454 Brexpiprazole Impurity 2, 99.30% | 913614-18-3 Brexpiprazole Impurity 2|C4X-11312|913614-18-3 https://www.jk-sci.com/products/j5307510 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f65f598577955496321bb228082ebf8e.jpg?v=1791415530 Z-Gly-Gly-Phe-OH, Purity by HPLC ≥ 97% | 13171-93-2 Z-Gly-Gly-Phe-OH|07510|13171-93-2 https://www.jk-sci.com/products/s57c4x-114612 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0f56cc1683c6cfd21090ef798c1b5472.jpg?v=1791382888 Lithium Claviate, 42.60% | 61177-44-4 Lithium Claviate|C4X-114612|61177-44-4 https://www.jk-sci.com/products/j5307871 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a2fe75dd4fd568f5cf822bc4b12aec87.jpg?v=1791415492 Na-Boc-Nd-pyrazinylcarbonyl-L-ornithine, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 201046-36-8 Na-Boc-Nd-pyrazinylcarbonyl-L-ornithine|07871|201046-36-8 https://www.jk-sci.com/products/s57c4x-11491 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/38ca474005b85a826e15af74ebb8631c.jpg?v=1791382830 Cefoperazone EP Impurity B, 92.20% | 711598-76-4 Cefoperazone EP Impurity B|C4X-11491|711598-76-4 https://www.jk-sci.com/products/s57c4x-11481 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2fa3beacc6191a42bf6b7b01ecf528ad.jpg?v=1791382868 Amoxicillin EP Impurity C, 91.90% | 2088961-37-7 Amoxicillin EP Impurity C|C4X-11481|2088961-37-7 https://www.jk-sci.com/products/s57c4x-114832 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_71e22253-7d47-488b-8e66-103dcf25aa5e.png?v=1791382849 Amoxicillin Impurity 32, 93.80% Amoxicillin Impurity 32|C4X-114832 https://www.jk-sci.com/products/s57c4x-11497 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/408646_e84ac3c3-bec2-4189-80da-f46417fa04c4.png?v=1791382802 Cefoperazone Impurity 7, Purity: 99.5% | 24209-38-9 Cefoperazone Impurity 7|C4X-11497|24209-38-9 https://www.jk-sci.com/products/j5307587 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/63655acd0aac4d456ddcbc33f1a73877.jpg?v=1791415525 Z-Pro-Gly-NH2 | 35010-96-9 Z-Pro-Gly-NH2|07587|35010-96-9 https://www.jk-sci.com/products/j5308027 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5b7fef9d38a6fe5d34fab460e1b44d49.jpg?v=1791415475 DL-b-Phenyllactic acid, Assay ≥ 99.9% | 828-01-3 DL-b-Phenyllactic acid|08027|828-01-3 https://www.jk-sci.com/products/s57c4x-11544 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5f483922cb59faafcb3045e6ea8b55ab.jpg?v=1791382770 Methotrexate EP Impurity D, 96.20% | 5623-18-7 Methotrexate EP Impurity D|C4X-11544|5623-18-7 https://www.jk-sci.com/products/s57c4x-11541 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/444225_958024fa-dc74-4be5-bdae-a0e6fb4478b5.png?v=1791382788 Methotrexate EP Impurity A, 96.30% | 945-24-4 Methotrexate EP Impurity A|C4X-11541|945-24-4 https://www.jk-sci.com/products/s57c4x-115533 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_58882b89-3520-4dbd-b653-e59c97390f09.png?v=1791382749 Sitafloxacin Impurity 33, 99.60% Sitafloxacin Impurity 33|C4X-115533 https://www.jk-sci.com/products/j5308117 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/047b7fc4e1bb255cfcdce410db2b0e69.jpg?v=1791415438 For-L-norleucine, Purity by HPLC ≥ 99% | 133388-96-2 For-L-norleucine|08117|133388-96-2 https://www.jk-sci.com/products/j5308468 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d80d8d29167e861b70fd2c5c54cf19ea.jpg?v=1791415390 DL-Tryptophan ethyl ester hydrochloride, Purity by HPLC ≥ 98% | 6519-67-1 DL-Tryptophan ethyl ester hydrochloride|08468|6519-67-1 https://www.jk-sci.com/products/j5308460 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b4541c306af992edbf5e95e8f2f89609.jpg?v=1791415403 DL-Norleucine methyl ester hydrochloride, Purity by HPLC ≥ 99% | 77300-48-2 DL-Norleucine methyl ester hydrochloride|08460|77300-48-2 https://www.jk-sci.com/products/j5308379 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e06ad22a33a584fc96e6ffd57f2eade0.jpg?v=1791415417 Ng-(2-Acetamido-2-deoxy-b-D-gluco-pyranosyl)-L-asparagine, Assay ≥ 92% (Nth 12.53% by elemental analysis) | 2776-93-4 Ng-(2-Acetamido-2-deoxy-b-D-gluco-pyranosyl)-L-asparagine|08379|2776-93-4 https://www.jk-sci.com/products/j5309543 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/63006b1437788e85ae3e378a7fe4dfb9.jpg?v=1791415239 N,N-Dimethyl-histidine methyl ester, Assay ≥ 76% (Nth 21.30% by Elemental analysis) | 170227-64-2 N,N-Dimethyl-histidine methyl ester|09543|170227-64-2 https://www.jk-sci.com/products/j5308613 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/564f7931b59a6d1db28c9d6f1c47e5fe.jpg?v=1791415356 Gly-Gly-Gly-OEt·HCl, Purity by HPLC ≥ 99% | 16194-06-2 Gly-Gly-Gly-OEt·HCl|08613|16194-06-2 https://www.jk-sci.com/products/j5308486 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a32752ec1e56878d1cd87cce777a5964.jpg?v=1791415377 D-Val-D-Val-OH, Purity by HPLC ≥ 98% | 62653-78-5 D-Val-D-Val-OH|08486|62653-78-5 https://www.jk-sci.com/products/s57c4x-11578 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a66863e7d4e1d696991e8f9641d360d6.jpg?v=1791382713 Dextromethorphan N-Oxide（HCl）, 92.80% | 1177419-85-0 Dextromethorphan N-Oxide（HCl）|C4X-11578|1177419-85-0 https://www.jk-sci.com/products/s57c4x-11568 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b5f67acea68052687d268d05e6d08cbe.jpg?v=1791382729 Diosmin Impurity 8 (Mixture of Diastereomers), 98.10% | 108815-81-2 Diosmin Impurity 8 (Mixture of Diastereomers)|C4X-11568|108815-81-2 https://www.jk-sci.com/products/j5308989 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9decf6662316c6bec9fd46196bc1910d.jpg?v=1791415298 Phe-Ala-OH, Purity by HPLC ≥ 98% | 3918-87-4 Phe-Ala-OH|08989|3918-87-4 https://www.jk-sci.com/products/j5309167 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/83dc7c2d064ba0236a2eca34bc658360.jpg?v=1791415264 Thr-Gly-Gly-OH, Purity by HPLC ≥ 99% | 66592-75-4 Thr-Gly-Gly-OH|09167|66592-75-4 https://www.jk-sci.com/products/j5309042 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7824e6920e06f0ca1a22fdca170d805e.jpg?v=1791415291 H-D-His(3-Me)-OH, Assay by titration ≥ 89% | 163750-76-3 H-D-His(3-Me)-OH|09042|163750-76-3 https://www.jk-sci.com/products/j5309646 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8552d06dabe2967ba029a71747078315.jpg?v=1791415215 N-b-Aminoethyl-Glycine | 24123-14-6 N-b-Aminoethyl-Glycine|09646|24123-14-6 https://www.jk-sci.com/products/s57c4x-116021 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/256284_b710683d-12a8-4ebe-9bd3-2b276d0fc9ab.png?v=1791382687 Methyl Desoxycholate, 97.60% | 3245-38-3 Methyl Desoxycholate|C4X-116021|3245-38-3 https://www.jk-sci.com/products/s57c4x-11621 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_62abaa3d-1b59-412b-98f0-2c9cdfdec441.png?v=1791382656 Febuxostat Impurity 1, Purity: 99.2% Febuxostat Impurity 1|C4X-11621 https://www.jk-sci.com/products/s57c4x-116229 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/508a9eef34af5c52498af23e1a997b99.jpg?v=1791382634 Febuxostat Impurity 29, 95.30% | 144060-62-8 Febuxostat Impurity 29|C4X-116229|144060-62-8 https://www.jk-sci.com/products/s57c4x-116221 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7329d5b6f9c6d5dfa8f5770783d85552.jpg?v=1791382648 Febuxostat Impurity 21, 90.50% | 407582-48-3 Febuxostat Impurity 21|C4X-116221|407582-48-3 https://www.jk-sci.com/products/s57c4x-116249 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/87bfa63fde0a5608b3d9d502fe3b71e0.jpg?v=1791382626 Febuxostat Impurity 49, 100.00% | 1206550-99-3 Febuxostat Impurity 49|C4X-116249|1206550-99-3 https://www.jk-sci.com/products/s57c4x-116258 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0f23df29f6fbe92d3f1a7c2ca161fb17.jpg?v=1791382621 Febuxostat Impurity 58, 99.00% | 2095166-41-7 Febuxostat Impurity 58|C4X-116258|2095166-41-7 https://www.jk-sci.com/products/s57c4x-116269 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f4e90dfcd38b418ae19a1be10b86a05e.jpg?v=1791382615 Febuxostat Impurity 69, 99.30% | 161798-01-2 Febuxostat Impurity 69|C4X-116269|161798-01-2 https://www.jk-sci.com/products/s57c4x-116279 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/379051_213cdc7d-6526-4a56-a5d6-c34757275952.png?v=1791382606 Febuxostat Impurity 79, Purity: 99.4% | 25984-63-8 Febuxostat Impurity 79|C4X-116279|25984-63-8 https://www.jk-sci.com/products/s57c4x-116290 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_d5f3393e-573e-412d-b8a0-51a7fc52c026.png?v=1791382596 Febuxostat Impurity 90, 98.10% Febuxostat Impurity 90|C4X-116290 https://www.jk-sci.com/products/s57c4x-116315 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/118387_a1d7b9a0-7254-45d4-b763-568e4ccef25b.png?v=1791382587 Ceftriaxone Disodium, Purity: 98.9% | 74578-69-1 Ceftriaxone Disodium|C4X-116315|74578-69-1 https://www.jk-sci.com/products/s57c4x-116337 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/342699_1eabcd26-95c4-40c9-9d9a-3da3e158ef76.png?v=1791382582 Ceftriaxone Impurity 37, 94.60% | 149-30-4 Ceftriaxone Impurity 37|C4X-116337|149-30-4 https://www.jk-sci.com/products/s57c4x-116341 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_59871883-df8c-4db2-89ac-c05d50a749fd.png?v=1791382571 Ceftriaxone Impurity 41, 92.80% | 473843-58-2 Ceftriaxone Impurity 41|C4X-116341|473843-58-2 https://www.jk-sci.com/products/j5310000 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/df4bddc46d74f36bf44aaa7f8804853a.jpg?v=1791415185 Substance P (9-11), Purity by HPLC ≥ 99% (TFA); ≥ 98% (NaClO4) | 40297-96-9 Substance P (9-11)|10000|40297-96-9 https://www.jk-sci.com/products/s57c4x-11641 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/516469_6557bfaf-cf94-47bd-baba-72bf512b09a0.png?v=1791382563 Oxcarbazepine EP Impurity H, 99.80% | 4698-11-7 Oxcarbazepine EP Impurity H|C4X-11641|4698-11-7 https://www.jk-sci.com/products/s57c4x-116414 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/795208_e09b1800-a30e-46ff-8416-2010319212a7.png?v=1791382557 Oxcarbazepine EP Impurity C, 99.40% | 21737-58-6 Oxcarbazepine EP Impurity C|C4X-116414|21737-58-6 https://www.jk-sci.com/products/s57c4x-116419 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3d160dbb5144d96c2d44d4e54d216f00.jpg?v=1791382548 Oxcarbazepine EP Impurity M, 95.40% | 2642430-32-6 Oxcarbazepine EP Impurity M|C4X-116419|2642430-32-6 https://www.jk-sci.com/products/s57c4x-116429 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e1f604f6-7d2c-46fc-ab83-b33b7858d696.png?v=1791382536 Oxcarbazepine Impurity 29, Purity: 97.9% Oxcarbazepine Impurity 29|C4X-116429 https://www.jk-sci.com/products/s57c4x-11645 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/295253_dc118d5b-60a3-45fa-9f79-ee2507bb71ef.png?v=1791382528 Oxcarbazepine EP Impurity B, 99.40% | 28721-09-7 Oxcarbazepine EP Impurity B|C4X-11645|28721-09-7 https://www.jk-sci.com/products/s57c4x-1165 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/308890_3e7a9e71-6235-4be0-819b-bb0a4e530424.png?v=1791382520 Dexamethasone, 99.80% | 50-02-2 Dexamethasone|C4X-1165|50-02-2 https://www.jk-sci.com/products/s57c4x-116513 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6e6eba4f2a3a73173bf3cb0b31909686.jpg?v=1791382513 Dexamethasone Impurity 6, 98.00% | 3949-26-6 Dexamethasone Impurity 6|C4X-116513|3949-26-6 https://www.jk-sci.com/products/s57c4x-116531 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c387bebe71a3347ebbffebb0c497a4df.jpg?v=1791382487 Dexamethasone Acid Ethyl Ester, 92.70% | 2991360-83-7 Dexamethasone Acid Ethyl Ester|C4X-116531|2991360-83-7 https://www.jk-sci.com/products/s57c4x-116528 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c56f58d3-cdc0-47fd-ba75-3fa3c9136a39.png?v=1791382494 Dexamethasone Sodium Phosphate EP Impurity D, 90.80% Dexamethasone Sodium Phosphate EP Impurity D|C4X-116528 https://www.jk-sci.com/products/s57c4x-116522 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_9f8369a7-d6cd-48c3-9503-e9c8b0dc464c.png?v=1791382502 Dexamethasone Sodium Phosphate EP Impurity C, 90.20% Dexamethasone Sodium Phosphate EP Impurity C|C4X-116522 https://www.jk-sci.com/products/s57c4x-11654 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/441250_52384bcb-a98b-4cbd-8a9a-daf8a6c5981e.png?v=1791382477 Dexamethasone EP Impurity D, 99.40% | 24916-90-3 Dexamethasone EP Impurity D|C4X-11654|24916-90-3 https://www.jk-sci.com/products/s57c4x-116553 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6803ee5d960c75fabdc1ad8d61fd0874.jpg?v=1791382465 Dexamethasone Impurity 53, Purity: 99.1% | 426-15-3 Dexamethasone Impurity 53|C4X-116553|426-15-3 https://www.jk-sci.com/products/s57c4x-116563 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/89bd7ad1603397dfdc5780675c7b2d83.jpg?v=1791382460 Dexamethasone impurity 63, 95.70% | 1202001-99-7 Dexamethasone impurity 63|C4X-116563|1202001-99-7 https://www.jk-sci.com/products/s57c4x-11659 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7cd8e8cb5c230ebc1b7fce85ac41f6db.jpg?v=1791382449 Dexamethasone EP Impurity I, 96.60% | 14622-47-0 Dexamethasone EP Impurity I|C4X-11659|14622-47-0 https://www.jk-sci.com/products/s57c4x-116614 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/315545_0801a2f9-2615-4190-a570-48c58f334523.png?v=1791382444 Sodium Valproate Impurity 14, 98.60% | 1636-27-7 Sodium Valproate Impurity 14|C4X-116614|1636-27-7 https://www.jk-sci.com/products/s57c4x-116634 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/259654_e6f0e1a5-b5fd-4f2f-b48b-e2e2bfa750bd.png?v=1791382428 Ethyl 2-propylpentanoate, 98.60% | 17022-31-0 Ethyl 2-propylpentanoate|C4X-116634|17022-31-0 https://www.jk-sci.com/products/s57c4x-116626 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/277d80155a9134a3c917e7f3026feb92.jpg?v=1791382435 Valproic Acid USP Related Compound A, 95.90% | 99-67-2 Valproic Acid USP Related Compound A|C4X-116626|99-67-2 https://www.jk-sci.com/products/s57c4x-11665 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/596408_3ff3bf46-6feb-4a32-ad35-c473f8b30839.png?v=1791382409 Sodium Valproate EP Impurity B, 97.20% | 20225-24-5 Sodium Valproate EP Impurity B|C4X-11665|20225-24-5 https://www.jk-sci.com/products/s57c4x-116645 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f5150de7ffa7ee77c58e3afc2659431e.jpg?v=1791382419 Sodium Valproate Impurity 42, 97.10% | 258264-00-5 Sodium Valproate Impurity 42|C4X-116645|258264-00-5 https://www.jk-sci.com/products/s57c4x-116663 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_3cc79156-a46d-4fcb-ba82-1b1c3aa786c3.png?v=1791382398 Valproate Impurity 63, 97.80% Valproate Impurity 63|C4X-116663 https://www.jk-sci.com/products/s57c4x-116669 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_653fbdb8-6290-4350-9386-c51cde425165.png?v=1791382390 Valproate Impurity 69, 92.50% Valproate Impurity 69|C4X-116669 https://www.jk-sci.com/products/s57c4x-116687 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b7b702df29069cf4a663f48e42aa4ae1.jpg?v=1791382384 Valproate impurity 87, 95.90% | 59726-37-3 Valproate impurity 87|C4X-116687|59726-37-3 https://www.jk-sci.com/products/s57c4x-1168 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0ceaa7b06174c3f82e4f0192332ac49b.jpg?v=1791382359 Fosaprepitant Dimeglumine, 95.40% | 265121-04-8 Fosaprepitant Dimeglumine|C4X-1168|265121-04-8 https://www.jk-sci.com/products/s57c4x-116714 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/454569_d111536c-0331-4bb0-b509-ac1df19aaf5b.png?v=1791382376 4-Hydroxyquinoline, 99.90% | 611-36-9 4-Hydroxyquinoline|C4X-116714|611-36-9 https://www.jk-sci.com/products/s57c4x-11674 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a4e95bc68a9d103a2b71b534ad5a7633.jpg?v=1791382368 Bedaquiline Impurity 4, 98.80% | 654655-69-3 Bedaquiline Impurity 4|C4X-11674|654655-69-3 https://www.jk-sci.com/products/s57c4x-1169 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2efc34114ea6ea99007650339b22aa7e.jpg?v=1791382353 Rosuvastatin Calcium, 95.20% | 147098-20-2 Rosuvastatin Calcium|C4X-1169|147098-20-2 https://www.jk-sci.com/products/s57c4x-116917 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_290bbc0b-eccd-45fa-846e-8dbeba01ba75.png?v=1791382345 Rosuvastatin EP Impurity E Calcium salt, 97.40% Rosuvastatin EP Impurity E Calcium salt|C4X-116917 https://www.jk-sci.com/products/s57c4x-116919 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/39836d71f0752d15efb553c1224b5738.jpg?v=1791382337 Rosuvastatin (6R)-Isomer Calcium Salt, 94.20% | 854898-49-0 Rosuvastatin (6R)-Isomer Calcium Salt|C4X-116919|854898-49-0 https://www.jk-sci.com/products/s57c4x-1169216 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/27b525bacf217551d3cceb1c784908b5.jpg?v=1791382329 Rosuvastatin Impurity 216, Purity: 99.1% | 65372-09-0 Rosuvastatin Impurity 216|C4X-1169216|65372-09-0 https://www.jk-sci.com/products/s57c4x-11694 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6f6e64271f5c6054d3a3e762d787176e.jpg?v=1791382324 Rosuvastatin EP Impurity C(Calcium Salt), 96.30% | 1422514-05-3 Rosuvastatin EP Impurity C(Calcium Salt)|C4X-11694|1422514-05-3 https://www.jk-sci.com/products/s57c4x-116952 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_6bcaeb86-fcf9-4269-bdc3-5ec2dc26944c.png?v=1791382313 Rosuvastatin EP Impurity M(Sodium Salt), 97.30% Rosuvastatin EP Impurity M(Sodium Salt)|C4X-116952 https://www.jk-sci.com/products/s57c4x-116964 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/278514_5bcb0299-ea06-4208-83ed-37e9d7ae4b1d.png?v=1791382304 Rosuvastatin Impurity 64, 98.70% | 124655-09-0 Rosuvastatin Impurity 64|C4X-116964|124655-09-0 https://www.jk-sci.com/products/s57c4x-11696 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/229160_9156bf78-3dde-4eac-9f01-e9db17c7ad2e.png?v=1791382308 Rosuvastatin EP Impurity F, 98.10% | 289042-12-2 Rosuvastatin EP Impurity F|C4X-11696|289042-12-2 https://www.jk-sci.com/products/s57c4x-1173 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/298087_018406e9-1077-4a99-90a4-bb16f587dff1.png?v=1791382295 Acarbose, 95.80% | 56180-94-0 Acarbose|C4X-1173|56180-94-0 https://www.jk-sci.com/products/s57c4x-116973 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/809e6b8d7a5f653360b55a55fd767c6e.jpg?v=1791382302 Rosuvastatin EP Impurity C, 90.10% | 1422619-13-3 Rosuvastatin EP Impurity C|C4X-116973|1422619-13-3 https://www.jk-sci.com/products/s57c4x-117311 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_15603611-ca11-4edf-a344-1b5e784d9f8b.png?v=1791382295 Acarbose Impurity 11 (Mixture of Diastereomers), Purity: 92.4% Acarbose Impurity 11 (Mixture of Diastereomers)|C4X-117311 https://www.jk-sci.com/products/s57c4x-117513 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fc504580399dc8342d651ff1fa808ef8.jpg?v=1791382286 Macitentan Impurity 13, 97.30% | 2089065-77-8 Macitentan Impurity 13|C4X-117513|2089065-77-8 https://www.jk-sci.com/products/s57c4x-1176133 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_958b6723-3b84-4d79-89f0-667de11ec1be.png?v=1791382256 Salbutamol Impurity 133, 97.10% Salbutamol Impurity 133|C4X-1176133 https://www.jk-sci.com/products/s57c4x-11761 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c46a7334bb1ee7924760e068eaf5d350.jpg?v=1791382265 Salbutamol EP Impurity J(HCl), 95.60% | 41489-89-8 Salbutamol EP Impurity J(HCl)|C4X-11761|41489-89-8 https://www.jk-sci.com/products/s57c4x-1176119 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e47c613772c269b5ab95ab619159bda.jpg?v=1791382258 (S)-Salbutamol, 90.90% | 34271-50-6 (S)-Salbutamol|C4X-1176119|34271-50-6 https://www.jk-sci.com/products/s57c4x-117526 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_6f45f422-2ae2-4100-a47f-818f5c94956e.png?v=1791382280 Macitentan Impurity 26, Purity: 98.7% Macitentan Impurity 26|C4X-117526 https://www.jk-sci.com/products/s57c4x-11753 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f56c2f7b734ecc28f75229a72fc6fcb4.jpg?v=1791382277 Macitentan Impurity 3, 97.50% | 1103522-45-7 Macitentan Impurity 3|C4X-11753|1103522-45-7 https://www.jk-sci.com/products/s57c4x-117615 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/15f26a4b8088e3d61302fb4a77224f53.jpg?v=1791382252 Salbutamol Impurity M, 98.20% | 18910-70-8 Salbutamol Impurity M|C4X-117615|18910-70-8 https://www.jk-sci.com/products/s57c4x-1176159 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e0b40315-d092-4c7b-94f0-d21f8a43fbd3.png?v=1791382248 【重复停用见C4X-1176182】Salbutamol Impurity 59HCI, Purity: 99.1% 【重复停用见C4X-1176182】Salbutamol Impurity 59HCI|C4X-1176159 https://www.jk-sci.com/products/s57c4x-1176160 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_60c8fb80-6bbe-453f-bfce-75aec9b3ba33.png?v=1791382243 Salbutamol Impurity M HCl, Purity: 99.0% Salbutamol Impurity M HCl|C4X-1176160 https://www.jk-sci.com/products/s57c4x-117621 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ba76348418951ee499aa3300fa330f14.jpg?v=1791382236 Salbutamol Impurity 21, 99.60% | 2387728-91-6 Salbutamol Impurity 21|C4X-117621|2387728-91-6 https://www.jk-sci.com/products/s57c4x-1176167 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_bdeed761-3be7-4137-9460-81f3bc178317.png?v=1791382242 Salbutamol Glyoxal Impurities, 92.30% Salbutamol Glyoxal Impurities|C4X-1176167 https://www.jk-sci.com/products/s57c4x-117627 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/261e83e406bf0c1f3691439284428ca9.jpg?v=1791382236 Salbutamol Impurity 27, 90.10% | 1823256-56-9 Salbutamol Impurity 27|C4X-117627|1823256-56-9 https://www.jk-sci.com/products/j5310092 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6ba395983a9fb9e6932b82be9b8a0bd5.jpg?v=1791415169 Tosyl-D-proline | 110771-95-4 Tosyl-D-proline|10092|110771-95-4 https://www.jk-sci.com/products/s57c4x-11763 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0c0fbca7ed9dabf54822a184916d940e.jpg?v=1791382230 Salbutamol EP Impurity B, Purity: 95.9% | 96948-64-0 Salbutamol EP Impurity B|C4X-11763|96948-64-0 https://www.jk-sci.com/products/s57c4x-117637 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0a76e078-4188-4157-824c-83af8067b996.png?v=1791382225 Salbutamol Sulfate EP Impurity L HCl, 93.50% Salbutamol Sulfate EP Impurity L HCl|C4X-117637 https://www.jk-sci.com/products/s57c4x-11769 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4babe0e3106d56d4ccad43ff1fca4267.jpg?v=1791382209 Salbutamol Impurity 9, 97.50% | 754926-25-5 Salbutamol Impurity 9|C4X-11769|754926-25-5 https://www.jk-sci.com/products/j5310099 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ff49a2ab8218f381954852e75669bec5.jpg?v=1791415164 Tosyl-L-Phenylalanine chloromethylketone, Assay ≥ 99% (Elemental analysis based on Carbon content) | 402-71-1 Tosyl-L-Phenylalanine chloromethylketone|10099|402-71-1 https://www.jk-sci.com/products/s57c4x-117687 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bd4fdd2aaa760866cd0660b3315ccb86.jpg?v=1791382213 Salbutamol Impurity 87, Purity: 100.0% | 115787-53-6 Salbutamol Impurity 87|C4X-117687|115787-53-6 https://www.jk-sci.com/products/s57c4x-117653 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d11639e1a35fc40a4b3f8ff42914a704.jpg?v=1791382222 Salbutamol Impurity 53, 96.50% | 54208-72-9 Salbutamol Impurity 53|C4X-117653|54208-72-9 https://www.jk-sci.com/products/s57c4x-117674 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_2de2521b-bf5d-4f9c-be0d-5018d9b9d0d8.png?v=1791382217 Salbutamol EP Impurity D HCl, 93.90% Salbutamol EP Impurity D HCl|C4X-117674 https://www.jk-sci.com/products/j5310544 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b64f3e2aba04e30c712ce1471fe5fd72.jpg?v=1791415148 1-Boc-4-aminopiperidine-4-carboxylic acid, Purity by HPLC ≥ 98% | 183673-71-4 1-Boc-4-aminopiperidine-4-carboxylic acid|10544|183673-71-4 https://www.jk-sci.com/products/a01248368 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/248368.png?v=1788925655 2,4-Dimethylpyrrole-3-carboxylic acid ethyl ester, 98% | 2199-51-1 2,4-Dimethylpyrrole-3-carboxylic acid ethyl ester, 98%|248368|2199-51-1 https://www.jk-sci.com/products/s57c4x-11772 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/205037_37e95b38-fc7e-43a2-b3ad-1915c015204c.png?v=1791382202 Hydrochlorothiazide EP Impurity B, 99.20% | 121-30-2 Hydrochlorothiazide EP Impurity B|C4X-11772|121-30-2 https://www.jk-sci.com/products/j5310559 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c4a663fa0fd238e5eb658e2164856d07.jpg?v=1791415142 1-O-Hexadecyl-2-O-methyl-sn-glycerol, Purity by HPLC ≥ 98% | 96960-92-8 1-O-Hexadecyl-2-O-methyl-sn-glycerol|10559|96960-92-8 https://www.jk-sci.com/products/j5310580 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/02001977657c6951d34730ba832f2576.jpg?v=1791415134 1-Palmitoyl-sn-glycero-3-phosphocholine, Purity by HPLC ≥ 98% | 17364-16-8 1-Palmitoyl-sn-glycero-3-phosphocholine|10580|17364-16-8 https://www.jk-sci.com/products/s57c4x-11773 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9543cd03283ba52092d71ac2264bfe3a.jpg?v=1791382202 Hydrochlorothiazide EP Impurity C, 91.10% | 402824-96-8 Hydrochlorothiazide EP Impurity C|C4X-11773|402824-96-8 https://www.jk-sci.com/products/s57c4x-117812 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/36bdbbc114cc9d34cce4e77022f5823e.jpg?v=1791382191 Olanzapine Impurity 12, 99.50% | 873895-41-1 Olanzapine Impurity 12|C4X-117812|873895-41-1 https://www.jk-sci.com/products/s57c4x-117820 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8db1499fc5432f1ae93805173c3e42f3.jpg?v=1791382193 Olanzapine Impurity 20, 90.60% | 1017241-34-7 Olanzapine Impurity 20|C4X-117820|1017241-34-7 https://www.jk-sci.com/products/s57c4x-11781 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/357abc44a3d57c0822b53a7f263ef3e9.jpg?v=1791382197 Olanzapine EP Impurity A, 98.00% | 138564-59-7 Olanzapine EP Impurity A|C4X-11781|138564-59-7 https://www.jk-sci.com/products/s57c4x-117840 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/245461_dff5a6a0-0239-443a-86ae-3dc0ace3a175.png?v=1791382182 Olanzapine Impurity 40, Purity: 99.9% | 1493-27-2 Olanzapine Impurity 40|C4X-117840|1493-27-2 https://www.jk-sci.com/products/s57c4x-117849 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_256b98dd-7c89-4cd0-8751-b083cd0afd33.png?v=1791382176 Olanzapine impurity 49, Purity: 98.2% Olanzapine impurity 49|C4X-117849 https://www.jk-sci.com/products/j5310603 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4fc68a1fa92ce7cb1d9e8bbb6b01fe3d.jpg?v=1791415124 3-Methoxytyramine·HCl, Purity by HPLC ≥ 97% | 1477-68-5 3-Methoxytyramine·HCl|10603|1477-68-5 https://www.jk-sci.com/products/j5310652 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5c1c889dac052a3cc4ee5b3eac6a8bad.jpg?v=1791415096 2-Abz-Gly-OH·HCl | 256657-23-5 2-Abz-Gly-OH·HCl|10652|256657-23-5 https://www.jk-sci.com/products/j5310747 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cfd2768696f2164eba64c89d01f3d2fb.jpg?v=1791415091 Aspartame, Purity by HPLC ≥ 98% | 22839-47-0 Aspartame|10747|22839-47-0 https://www.jk-sci.com/products/s57c4x-11787 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/300447.png?v=1791382177 Olanzapine Impurity 7, Purity: 99.1% | 138564-58-6 Olanzapine Impurity 7|C4X-11787|138564-58-6 https://www.jk-sci.com/products/s57c4x-118111 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/faa81ac632c51abcc5fcb57a80b01e04.jpg?v=1791382161 Carbamazepine Impurity 11, 99.10% | 33948-20-8 Carbamazepine Impurity 11|C4X-118111|33948-20-8 https://www.jk-sci.com/products/s57c4x-118011 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/236200.png?v=1791382171 Benzyl Alcohol Impurity 11, 90.60% | 1024-41-5 Benzyl Alcohol Impurity 11|C4X-118011|1024-41-5 https://www.jk-sci.com/products/s57c4x-11806 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/220520_061d20bd-2ab4-4cca-b632-bb8470c1f1bd.png?v=1791382166 Benzyl Alcohol EP Impurity B, 98.90% | 100-49-2 Benzyl Alcohol EP Impurity B|C4X-11806|100-49-2 https://www.jk-sci.com/products/j5310911 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/352e033a4c05a461850ab70ebee1de5a.jpg?v=1791415075 1,2-Dilauroyl-sn-glycero-3-phosphocholine (synthetic), Assay ≥ 99% | 18194-25-7 1,2-Dilauroyl-sn-glycero-3-phosphocholine (synthetic)|10911|18194-25-7 https://www.jk-sci.com/products/s57c4x-11812 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/37ad2e805094860ae9cb5132abdd696b_d06f87d4-c231-47ca-b9b8-4f52ba6a6a1e.jpg?v=1791382161 10,11-Dihydro-10-Hydroxy Carbamazepine | 29331-92-8 10,11-Dihydro-10-Hydroxy Carbamazepine|C4X-11812|29331-92-8 https://www.jk-sci.com/products/a01249255 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/249255.png?v=1790212986 2-Mercaptothiazole, 98% | 82358-09-6 2-Mercaptothiazole, 98%|249255|82358-09-6 https://www.jk-sci.com/products/s57c4x-11816 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eff9114ceebc4dbf7235f044187847cd.jpg?v=1791382147 Carbamazepine Impurity 6, 99.00% | 40421-03-2 Carbamazepine Impurity 6|C4X-11816|40421-03-2 https://www.jk-sci.com/products/s57c4x-118353 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/285241.png?v=1791382133 Terbutaline Impurity 53, 95.50% | 51863-60-6 Terbutaline Impurity 53|C4X-118353|51863-60-6 https://www.jk-sci.com/products/s57c4x-118320 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ad3ee576-1b09-4745-a6c0-5a1e752328a0.png?v=1791382139 Terbutaline Impurity 20, Purity: 99.7% Terbutaline Impurity 20|C4X-118320 https://www.jk-sci.com/products/s57c4x-118311 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e64c12fb-71fb-462d-9b9e-1f3213489a8d.png?v=1791382141 Terbutaline EP Impurity C (Hydrobromide), 94.80% Terbutaline EP Impurity C (Hydrobromide)|C4X-118311 https://www.jk-sci.com/products/s57c4x-11831 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/445888.png?v=1791382145 Terbutaline EP Impurity A, 97.80% | 99-10-5 Terbutaline EP Impurity A|C4X-11831|99-10-5 https://www.jk-sci.com/products/s57c4x-118133 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/110055_26c72b31-2dc0-49c2-bcf4-e5d089fc044d.png?v=1791382153 Carbamazepine Impurity 33, 100.00% | 34124-14-6 Carbamazepine Impurity 33|C4X-118133|34124-14-6 https://www.jk-sci.com/products/s57c4x-118368 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_319ac68c-b1fc-4a7c-80a4-e02f03d88fd2.png?v=1791382132 Terbutaline impurity 68, 97.20% Terbutaline impurity 68|C4X-118368 https://www.jk-sci.com/products/s57c4x-118373 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ee26dad7-4b94-41d7-ba3a-8afbd2b54a92.png?v=1791382126 Terbutaline Impurity 29 HCl, Purity: 95.9% Terbutaline Impurity 29 HCl|C4X-118373 https://www.jk-sci.com/products/s57c4x-11841 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/322452.png?v=1791382121 Aspartame EP Impurity A, 100.00% | 5262-10-2 Aspartame EP Impurity A|C4X-11841|5262-10-2 https://www.jk-sci.com/products/s57c4x-118612 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/477687.png?v=1791382108 Repaglinide EP Impurity C, Purity: 97.4% | 147769-93-5 Repaglinide EP Impurity C|C4X-118612|147769-93-5 https://www.jk-sci.com/products/j5310913 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a7115572d210fbc9f1d345fa1f703fe6.jpg?v=1791415071 1,2-Dilauroyl-sn-glycerol, Assay ≥ 99% | 60562-15-4 1,2-Dilauroyl-sn-glycerol|10913|60562-15-4 https://www.jk-sci.com/products/s57c4x-11857 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/138746.png?v=1791382112 Glutathione Impurity 7, 95.30% | 3773-07-7 Glutathione Impurity 7|C4X-11857|3773-07-7 https://www.jk-sci.com/products/s57c4x-11851 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/312630.png?v=1791382116 Glutathione EP Impurity A, 94.70% | 19246-18-5 Glutathione EP Impurity A|C4X-11851|19246-18-5 https://www.jk-sci.com/products/s57c4x-118626 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/689b9631d171917485fc35f98717f254.jpg?v=1791382107 Repaglinide Impurity 26, 94.90% | 791812-92-5 Repaglinide Impurity 26|C4X-118626|791812-92-5 https://www.jk-sci.com/products/s57c4x-11864 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b087d9a6b67ca547c8e337551ec6b82a.jpg?v=1791382101 Repaglinide EP Impurity D, 99.80% | 147770-06-7 Repaglinide EP Impurity D|C4X-11864|147770-06-7 https://www.jk-sci.com/products/j5310921 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b547053274bcdf72ccdf2353b0314f55.jpg?v=1791415059 1,2-Dipalmitoyl-rac-glycerol, Purity ≥ 99% (NMR) | 40290-32-2 1,2-Dipalmitoyl-rac-glycerol|10921|40290-32-2 https://www.jk-sci.com/products/s57c4x-11871 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b721fe0efb920d91645f44f582e5907f.jpg?v=1791382096 Tamsulosin EP Impurity A HCl, 100.00% | 918867-88-6 Tamsulosin EP Impurity A HCl|C4X-11871|918867-88-6 https://www.jk-sci.com/products/j5310917 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f4c4c17734c043368a5d4b77aa9f903d.jpg?v=1791415066 1,2-Dimyristoyl-sn-glycero-3-phosphocholine, Purity by GC Fatty Acid (Myristic Acid): ≥ 99% || Purity by HPLC ≥ 99% w/w versu | 18194-24-6 1,2-Dimyristoyl-sn-glycero-3-phosphocholine|10917|18194-24-6 https://www.jk-sci.com/products/s57c4x-11875 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/56d7dba07431025df69bd8bd0a18354f.jpg?v=1791382086 Tamsulosin Ep Impurity E, 99.60% | 105764-07-6 Tamsulosin Ep Impurity E|C4X-11875|105764-07-6 https://www.jk-sci.com/products/a01249888 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/249888.png?v=1790212951 Choline bitartrate, 98% | 87-67-2 Choline bitartrate, 98%|249888|87-67-2 https://www.jk-sci.com/products/s57c4x-11873 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/373046d0ffa28a3fe992bd4c795b3c09.jpg?v=1791382094 Tamsulosin EP Impurity C, 98.20% | 2244986-82-9 Tamsulosin EP Impurity C|C4X-11873|2244986-82-9 https://www.jk-sci.com/products/s57c4x-11874 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5be7a50f5f9e40fc6b33999f1f56393f.jpg?v=1791382091 Tamsulosin EP Impurity D, 98.20% | 1799280-05-9 Tamsulosin EP Impurity D|C4X-11874|1799280-05-9 https://www.jk-sci.com/products/j5310923 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fd99f91ef182fc8071f420a7919fb9f8.jpg?v=1791415054 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine, Purity by HPLC ≥ 98% | 63-89-8 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine|10923|63-89-8 https://www.jk-sci.com/products/s57c4x-118755 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b43940bfa41e68d2dcad842973bda101.jpg?v=1791382081 Tamsulosin impurity 55, Purity: 99.7% | 2892260-31-8 Tamsulosin impurity 55|C4X-118755|2892260-31-8 https://www.jk-sci.com/products/s57c4x-11877 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/50730562889836a6d9a749ad0a91b5f7.jpg?v=1791382077 Tamsulosin EP Impurity G, 99.10% | 106138-88-9 Tamsulosin EP Impurity G|C4X-11877|106138-88-9 https://www.jk-sci.com/products/s57c4x-11881 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_59f856f1-64e7-41e1-8519-637a80544a31.png?v=1791382073 Chlorphenamine EP Impurity A(Maleate), 97.60% Chlorphenamine EP Impurity A(Maleate)|C4X-11881 https://www.jk-sci.com/products/j5310928 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0d4375a5986a8bad34d0787c7f0f71c8.jpg?v=1791415050 1,2-Distearoyl-rac-glycerol, Purity ≥ 97% (NMR) | 1188-58-5 1,2-Distearoyl-rac-glycerol|10928|1188-58-5 https://www.jk-sci.com/products/j5310934 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d2848dc2807130713edd084f7120d729.jpg?v=1791415045 1,2-O-Dihexadecyl-sn-glycerol | 67337-03-5 1,2-O-Dihexadecyl-sn-glycerol|10934|67337-03-5 https://www.jk-sci.com/products/s57c4x-118817 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6c98d2d64fceea55f40404fbf210efd4.jpg?v=1791382069 Chlorphenamine EP Impurity D, 90.80% | 65676-21-3 Chlorphenamine EP Impurity D|C4X-118817|65676-21-3 https://www.jk-sci.com/products/j5311047 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d216a5cc84070c5bd3693bf23d87d85e.jpg?v=1791415015 Cyclo(-Gly-L-Phe), Purity by HPLC ≥ 99% | 10125-07-2 Cyclo(-Gly-L-Phe)|11047|10125-07-2 https://www.jk-sci.com/products/j5311176 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d24387b21e27eb019a40272c4b70ca20.jpg?v=1791414976 Na-Fmoc-N?,?-dimethyl-L-arginine (asymmetrical) hydrochloride, Assay ≥ 86% (Elemental analysis based on Nitrogen content) || Purity by HPLC ≥ 9 | 268564-10-9 Na-Fmoc-N?,?-dimethyl-L-arginine (asymmetrical) hydrochloride|11176|268564-10-9 https://www.jk-sci.com/products/j5311019 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b53144f7ad7ddfc72fed2a509037da09.jpg?v=1791415030 Cyclo (L-Ala-L-ala), Purity by HPLC ≥ 99% | 5845-61-4 Cyclo (L-Ala-L-ala)|11019|5845-61-4 https://www.jk-sci.com/products/s57c4x-118821 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3606891a6cb2de2ed07d787aeeafb41e.jpg?v=1791382064 Chlorphenamine Impurity 21, Purity: 99.4% | 5005-37-8 Chlorphenamine Impurity 21|C4X-118821|5005-37-8 https://www.jk-sci.com/products/s57c4x-118825 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/570cebd567b9dc76a5f11366415412ed.jpg?v=1791382063 Chlorphenamine Impurity 25, Purity: 97.9% | 122376-68-5 Chlorphenamine Impurity 25|C4X-118825|122376-68-5 https://www.jk-sci.com/products/a01250143 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/250143.png?v=1790086265 Tetraphenyl thiophene, 98% | 1884-68-0 Tetraphenyl thiophene, 98%|250143|1884-68-0 https://www.jk-sci.com/products/j5311182 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/439b5028e2cf0d4d1e8dbfa743fad21a.jpg?v=1791414966 Fmoc-D-aspartic acid, Purity by HPLC ≥ 97% | 136083-57-3 Fmoc-D-aspartic acid|11182|136083-57-3 https://www.jk-sci.com/products/s57c4x-118832 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cb5ff4621902a59413465fca12678bbf.jpg?v=1791382057 Chlorpheniramine Impurity 32, Purity: 99.0% | 854863-55-1 Chlorpheniramine Impurity 32|C4X-118832|854863-55-1 https://www.jk-sci.com/products/j5311336 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fac8d48d147b62a3f0470c0fb1feb5e4.jpg?v=1791414937 Boc-D-His(3-Me)-OH, Assay ≥ 99% (Elemental analysis based on Nitrogen content) | 200871-84-7 Boc-D-His(3-Me)-OH|11336|200871-84-7 https://www.jk-sci.com/products/j5311587 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a288ad6ec016ea5f7d9d733968f5a478.jpg?v=1791414898 Na-Allyloxycarbonyl-Ne-Boc-L-lysine dicyclohexyl ammonium salt, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 110637-53-1 Na-Allyloxycarbonyl-Ne-Boc-L-lysine dicyclohexyl ammonium salt|11587|110637-53-1 https://www.jk-sci.com/products/j5311432 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4337f167fc5ee2ee1a5b5f53f95620ba.jpg?v=1791414922 Boc-(2R,3S)-3-phenylisoserine, Purity by HPLC ≥ 99% | 145514-62-1 Boc-(2R,3S)-3-phenylisoserine|11432|145514-62-1 https://www.jk-sci.com/products/j5311339 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7873b63aff82963bec96ff0b3d5b7c7b.jpg?v=1791414932 H-His(3-Me)-OH, Assay ≥ 98% | 368-16-1 H-His(3-Me)-OH|11339|368-16-1 https://www.jk-sci.com/products/j5311593 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/90b7ae1406706a0498eb7a3035f026f6.jpg?v=1791414897 Boc-L-alanine aldehyde, Purity ≥ 95% (NMR) | 79069-50-4 Boc-L-alanine aldehyde|11593|79069-50-4 https://www.jk-sci.com/products/s57c4x-11884 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_a7612505-fe8c-4512-9e1d-6292de8c7d88.png?v=1791382052 Chlorphenamine EP Impurity D Maleate, 98.40% Chlorphenamine EP Impurity D Maleate|C4X-11884 https://www.jk-sci.com/products/s57c4x-11887 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/22f8be098ca3aa1d1f1d25c6497afa69.jpg?v=1791382047 Chlorphenamine Impurity 7, 98.80% | 78180-89-9 Chlorphenamine Impurity 7|C4X-11887|78180-89-9 https://www.jk-sci.com/products/s57c4x-119011 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/368246.png?v=1791382041 Captopril EP Impurity C, Purity: 99.7% | 26473-47-2 Captopril EP Impurity C|C4X-119011|26473-47-2 https://www.jk-sci.com/products/j5311606 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bc8edb8edafcf75c0f9693c5cedae1dd.jpg?v=1791414888 Na-Boc-Ne-4-nitro-Z-L-lysine, Purity by HPLC ≥ 99% | 22601-53-2 Na-Boc-Ne-4-nitro-Z-L-lysine|11606|22601-53-2 https://www.jk-sci.com/products/s57c4x-119019 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/138129.png?v=1791382034 Captopril EP Impurity A (Captopril disulfide), 99.00% | 64806-05-9 Captopril EP Impurity A (Captopril disulfide)|C4X-119019|64806-05-9 https://www.jk-sci.com/products/a01250433 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/250433.png?v=1790086264 β-D-Glucose pentaacetate, 98% | 604-69-3 β-D-Glucose pentaacetate, 98%|250433|604-69-3 https://www.jk-sci.com/products/a01250607 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/460951.png?v=1790212932 2-Bromo-5-nitrothiazole, 98% | 3034-48-8 2-Bromo-5-nitrothiazole, 98%|250607|3034-48-8 https://www.jk-sci.com/products/s57c4x-11906 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/254461.png?v=1791382030 Captopril EP Impurity J, Purity: 99.5% | 64838-55-7 Captopril EP Impurity J|C4X-11906|64838-55-7 https://www.jk-sci.com/products/s57c4x-119130 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/59c0adf8d1d60ccbad015f52a956a203.jpg?v=1791382023 Apatinib, Purity>95% | 811803-05-1 Apatinib|C4X-119130|811803-05-1 https://www.jk-sci.com/products/s57c4x-119310 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a78e81776fd7d82cb9f0b2dec9838678.jpg?v=1791382015 Cefepime Impurity 10, 92.40% | 88040-25-9 Cefepime Impurity 10|C4X-119310|88040-25-9 https://www.jk-sci.com/products/j5305527 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5abc2510ad37495698d165a05aa86ad3.jpg?v=1791417409 Boc-DL-valine, Purity by HPLC ≥ 99% | 54895-12-4 Boc-DL-valine|05527|54895-12-4 https://www.jk-sci.com/products/s57c4x-1193 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/228088.png?v=1791382020 Cefepime dihydrochloridum monohydricum, 98.00% | 123171-59-5 Cefepime dihydrochloridum monohydricum|C4X-1193|123171-59-5 https://www.jk-sci.com/products/s57c4x-11932 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_52cfca1e-1646-4f1f-b4c0-50d7054333c9.png?v=1791382014 Cefepime EP Impurity B, 91.90% Cefepime EP Impurity B|C4X-11932 https://www.jk-sci.com/products/s57c4x-11933 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5a97d6590351e60e3c3f879387d8d02f.jpg?v=1791382007 Cefepime EP Impurity C, 91.40% | 104301-63-5 Cefepime EP Impurity C|C4X-11933|104301-63-5 https://www.jk-sci.com/products/j5306437 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cbbfb7701b0fd907956b17db132df30a.jpg?v=1791416456 Na-Z-D-lysine benzyl ester benzenesulfonate salt | 201018-13-5 Na-Z-D-lysine benzyl ester benzenesulfonate salt|06437|201018-13-5 https://www.jk-sci.com/products/j5307031 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/111ba284bfed6b12be0fbfe06ae44b74.jpg?v=1791416101 4-tert-Butyloxycarbonyl-L-phenylalanine, Purity by HPLC ≥ 95% | 218962-77-7 4-tert-Butyloxycarbonyl-L-phenylalanine|07031|218962-77-7 https://www.jk-sci.com/products/j5307210 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fb1aa551b1f1bc260857b68b83c05248.jpg?v=1791415890 Sodium sulfide hydrated, Assay by titration ≥ 60% (Acid Metric) | 27610-45-3 Sodium sulfide hydrated|07210|27610-45-3 https://www.jk-sci.com/products/j5307320 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1f052026fefcc1813d8454b697a679f9.jpg?v=1791415758 Fmoc-(R,S)-3-amino-3-(1-naphthyl)propionic acid, Purity by HPLC ≥ 98% | 269078-77-5 Fmoc-(R,S)-3-amino-3-(1-naphthyl)propionic acid|07320|269078-77-5 https://www.jk-sci.com/products/s57c4x-11934 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/352659_71eaa1cb-92ef-4db6-ad15-f6bd1990283d.png?v=1791382005 Cefepime EP Impurity D, 81.40% | 65872-41-5 Cefepime EP Impurity D|C4X-11934|65872-41-5 https://www.jk-sci.com/products/s57c4x-111126 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/494fa576bc7cc55beb1cefbc9c1f847b.jpg?v=1791384118 (Z)Risperidone Impurity 26, 98.90% | 135634-18-3 (Z)Risperidone Impurity 26|C4X-111126|135634-18-3 https://www.jk-sci.com/products/s57c4x-11937 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d1ee3110b9d9512d434107ca31a0f74c.jpg?v=1791382001 Cefepime EP Impurity A, 91.60% | 97164-57-3 Cefepime EP Impurity A|C4X-11937|97164-57-3 https://www.jk-sci.com/products/a019456095 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ef42b835-9f15-4a90-a69f-336459e7d17c.png?v=1787976567 Glycogen PAS staining solution Glycogen PAS staining solution|9456095 https://www.jk-sci.com/products/j5307389 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/41e2876b37c6925b9c370ee2c4dff9d2.jpg?v=1791415634 p-Trifluoromethyl-D-phenylalanine, Purity by HPLC ≥ 99% | 114872-99-0 p-Trifluoromethyl-D-phenylalanine|07389|114872-99-0 https://www.jk-sci.com/products/s57c4x-113040 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c8526974db8c189a70aab2e5889d8548.jpg?v=1791383514 Ilaprazole Impurity 40, 88.40% | 102625-96-7 Ilaprazole Impurity 40|C4X-113040|102625-96-7 https://www.jk-sci.com/products/s57c4x-113242 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ca96666cb5e453a09a40c82e94995860.jpg?v=1791383341 Atorvastatin Lactam calcium Salt Impurity, 95.20% | 1046118-41-5 Atorvastatin Lactam calcium Salt Impurity|C4X-113242|1046118-41-5 https://www.jk-sci.com/products/s57c4x-113590 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0446763f-31ae-4bee-a0d1-17a0c74d128c.png?v=1791383201 Olaparib Impurity 90, 90.50% Olaparib Impurity 90|C4X-113590 https://www.jk-sci.com/products/s57c4x-113456 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_f774d287-ade9-465e-ad07-6b79d86c129e.png?v=1791383266 Neratinib Impurity 56, Purity: 99.8% Neratinib Impurity 56|C4X-113456 https://www.jk-sci.com/products/s57c4x-113830 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fad01b03b6a24129b014877a77c33785.jpg?v=1791383131 Dapagliflozin Propanediol Hydrate, 96.30% | 960404-48-2 Dapagliflozin Propanediol Hydrate|C4X-113830|960404-48-2 https://www.jk-sci.com/products/j5307444 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dfe8a50b2984045350e10c373794375e.jpg?v=1791415540 3-Styryl-L-alanine, Purity by HPLC ≥ 99% | 267650-37-3 3-Styryl-L-alanine|07444|267650-37-3 https://www.jk-sci.com/products/s57c4x-1140 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4a0ae6fab2a99efbffccb1611098221a.jpg?v=1791383059 Lenvatinib Mesylate, 97.60% | 857890-39-2 Lenvatinib Mesylate|C4X-1140|857890-39-2 https://www.jk-sci.com/products/j5307811 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/649e3f02f002bcf21cb86ff4897c08f9.jpg?v=1791415507 Boc-Ala-Gly-Gly-OH, Purity by HPLC ≥ 99% | 115035-47-7 Boc-Ala-Gly-Gly-OH|07811|115035-47-7 https://www.jk-sci.com/products/s57c4x-114130 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3fe79ac32eee81e474f114fd677b1dc1.jpg?v=1791382993 Aprepitant EP Impurity B, 96.30% | 2348441-62-1 Aprepitant EP Impurity B|C4X-114130|2348441-62-1 https://www.jk-sci.com/products/j5308082 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5f88a3dc28ca3eb2e4dc5c92127c43cb.jpg?v=1791415453 Fmoc-Phe-Pro-OH, Purity by HPLC ≥ 95.0% | 138372-76-6 Fmoc-Phe-Pro-OH|08082|138372-76-6 https://www.jk-sci.com/products/j5308456 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7df2afbd7f7f2eeb173696243b8bb8b1.jpg?v=1791415408 DL-Leucine methyl ester hydrochloride, Purity by HPLC ≥ 99% | 6322-53-8 DL-Leucine methyl ester hydrochloride|08456|6322-53-8 https://www.jk-sci.com/products/j5308471 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0b971ae3d2781766b2ece37612f1a6e9.jpg?v=1791415382 Ne-Allyloxycarbonyl-D-lysine, Assay by titration ≥ 99% || Purity by HPLC ≥ 98% | 274260-42-3 Ne-Allyloxycarbonyl-D-lysine|08471|274260-42-3 https://www.jk-sci.com/products/s57c4x-1144153 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/839da55a6b0023b19713cacaea6a1e3d.jpg?v=1791382953 Sitagliptin Impurity 153, 94.70% | 910409-20-0 Sitagliptin Impurity 153|C4X-1144153|910409-20-0 https://www.jk-sci.com/products/s57c4x-114465 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c0caf6ea174dc29ac7143eaa6c5081b2.jpg?v=1791382914 Sitagliptin Impurity 65, 96.20% | 1620129-74-9 Sitagliptin Impurity 65|C4X-114465|1620129-74-9 https://www.jk-sci.com/products/j5308698 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e94d116a1c62ddb44bfb6ef73b13ce3.jpg?v=1791415332 Gly-Thr-OH, Purity by HPLC ≥ 98% | 7093-70-1 Gly-Thr-OH|08698|7093-70-1 https://www.jk-sci.com/products/s57c4x-11465 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/445177_446d8121-6995-480c-83bf-0e5355be0324.png?v=1791382880 Potassium Clavulanate EP Impurity M, 93.60% | 3033-62-3 Potassium Clavulanate EP Impurity M|C4X-11465|3033-62-3 https://www.jk-sci.com/products/s57c4x-114855 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_3ec0e15a-7beb-466e-befd-1be8dd8b5d10.png?v=1791382838 Amoxicillin Impurity 55, 94.20% Amoxicillin Impurity 55|C4X-114855 https://www.jk-sci.com/products/s57c4x-115234 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/583648_c1d85924-e2cd-4207-9ff1-6cba2bf3a4bd.png?v=1791382796 Adefovir Impurity 34, Purity: 100.0% | 1538-75-6 Adefovir Impurity 34|C4X-115234|1538-75-6 https://www.jk-sci.com/products/j5309069 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b1f4514d9456d3a9b8db32cbd998dc29.jpg?v=1791415285 H-Pro-Leu-Gly-NHOH·HCl, Assay ≥ 75% (Nth : 18.65%) (elemental analysis) || Titration Chlorine content : | 120928-08-7 H-Pro-Leu-Gly-NHOH·HCl|09069|120928-08-7 https://www.jk-sci.com/products/s57c4x-11549 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1c7b7969763cb54110b86e5c9e732cd7.jpg?v=1791382754 Methotrexate EP Impurity I, 93.40% | 66147-29-3 Methotrexate EP Impurity I|C4X-11549|66147-29-3 https://www.jk-sci.com/products/s57c4x-11573 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4a2f7487200f2b5c6f4b5f7013707632.jpg?v=1791382722 Dextromethorphan EP Impurity C, 99.80% | 57969-05-8 Dextromethorphan EP Impurity C|C4X-11573|57969-05-8 https://www.jk-sci.com/products/j5309616 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6ff5c324539da99ad57686c852c64e76.jpg?v=1791415229 N-Methyl-L-threonine hydrochloride, Assay ≥ 99% (Nth 10.52% by Elemental analysis) | 2812-28-4 N-Methyl-L-threonine hydrochloride|09616|2812-28-4 https://www.jk-sci.com/products/s57c4x-1161 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/407855_6f87d352-4140-4274-a873-3a7d469acfdb.png?v=1791382663 Mitiglinide calcium hydrate, 99.60% | 207844-01-7 Mitiglinide calcium hydrate|C4X-1161|207844-01-7 https://www.jk-sci.com/products/s57c4x-116225 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cdd14bccac5b2ba2ee86e7e7a73de9b3.jpg?v=1791382639 Febuxostat Impurity 25, 93.40% | 1530308-87-2 Febuxostat Impurity 25|C4X-116225|1530308-87-2 https://www.jk-sci.com/products/s57c4x-116256 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_1fdcf66e-7b06-49cf-a258-bb14d4096bf9.png?v=1791382623 Febuxostat Impurity 56, 97.60% Febuxostat Impurity 56|C4X-116256 https://www.jk-sci.com/products/j5310005 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7eced125a80aca9da5e8898a4faa61c6.jpg?v=1791415180 Suc-Ala-Ala-Pro-Ala-pNA, Purity by HPLC ≥ 97% | 72682-69-0 Suc-Ala-Ala-Pro-Ala-pNA|10005|72682-69-0 https://www.jk-sci.com/products/s57c4x-116271 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/984e5b4d17930e4e7e61a4748de17e60.jpg?v=1791382610 Febuxostat Impurity 71, 99.10% | 923942-34-1 Febuxostat Impurity 71|C4X-116271|923942-34-1 https://www.jk-sci.com/products/s57c4x-11631 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e1f12a485b7806f1a4241c27b39b946.jpg?v=1791382596 Ceftriaxone Sodium EP Impurity A, 90.40% | 92143-31-2 Ceftriaxone Sodium EP Impurity A|C4X-11631|92143-31-2 https://www.jk-sci.com/products/s57c4x-116339 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_7c8212a6-f0d2-4501-ae31-8b4ebfd873b6.png?v=1791382577 Ceftriaxone Impurity 39, 99.60% Ceftriaxone Impurity 39|C4X-116339 https://www.jk-sci.com/products/s57c4x-11648 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/228618_da241fa8-d390-419c-8f0e-3ff1bb3ac664.png?v=1791382524 Oxcarbazepine EP Impurity F, 92.80% | 28721-08-6 Oxcarbazepine EP Impurity F|C4X-11648|28721-08-6 https://www.jk-sci.com/products/s57c4x-116411 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/352958_7eef4617-5a98-4e49-a78d-019c643d9667.png?v=1791382561 Oxcarbazepine Impurity 11, 97.60% | 494-19-9 Oxcarbazepine Impurity 11|C4X-116411|494-19-9 https://www.jk-sci.com/products/s57c4x-116427 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a8006ab292ef443e8bad6a3172766d5d.jpg?v=1791382543 Oxcarbazepine Impurity 27, 100.00% | 4014-77-1 Oxcarbazepine Impurity 27|C4X-116427|4014-77-1 https://www.jk-sci.com/products/s57c4x-116526 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ab66d1847d4598d47b71b92b5f79e798.jpg?v=1791382499 Dexamethasone Sodium Phosphate Impurity B, 96.40% | 360-63-4 Dexamethasone Sodium Phosphate Impurity B|C4X-116526|360-63-4 https://www.jk-sci.com/products/j5310543 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4fa7038f3d86e51241f2d820a9918c80.jpg?v=1791415152 1-Amino-4-chloro-2-butyne·HCl | 77369-59-6 1-Amino-4-chloro-2-butyne·HCl|10543|77369-59-6 https://www.jk-sci.com/products/a019456123 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_aade6457-cdfa-4a98-81ef-ff347c3fe8f1.png?v=1787976524 Tris-acetic acid electrophoresis buffer (50×TAE) Tris-acetic acid electrophoresis buffer (50×TAE)|9456123 https://www.jk-sci.com/products/s57c4x-116534 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/628022_b25c277d-a450-4e44-ac72-03c2d2d7361c.png?v=1791382478 Dexamethasone 17-Formyloxy-17-Acid, 95.50% | 473273-04-0 Dexamethasone 17-Formyloxy-17-Acid|C4X-116534|473273-04-0 https://www.jk-sci.com/products/s57c4x-11663 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f548e79171e04f5eef04bcecb2834b4c.jpg?v=1791382430 Sodium Valproate EP Impurity C, 96.50% | 62391-99-5 Sodium Valproate EP Impurity C|C4X-11663|62391-99-5 https://www.jk-sci.com/products/j5310579 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dffb169361226e5aa7a5dac5f8188f48.jpg?v=1791415139 1-Palmitoyl-rac-glycerol, Purity by GC ≥ 95% | 542-44-9 1-Palmitoyl-rac-glycerol|10579|542-44-9 https://www.jk-sci.com/products/s57c4x-11656 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/421072_6ec5c71d-f6cb-4d7d-9152-e48c81689c86.png?v=1791382460 Dexamethasone EP Impurity F, 96.00% | 382-67-2 Dexamethasone EP Impurity F|C4X-11656|382-67-2 https://www.jk-sci.com/products/s57c4x-116647 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/158694_22adbec1-8e51-46d8-b5b1-2038216e053b.png?v=1791382416 Valproate Impurity 47, 98.90% | 6065-63-0 Valproate Impurity 47|C4X-116647|6065-63-0 https://www.jk-sci.com/products/s57c4x-116610 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/28f3c7de81c1a17589cf4953ba384adb.jpg?v=1791382448 Sodium Valproate EP Impurity G, 96.00% | 52061-73-1 Sodium Valproate EP Impurity G|C4X-116610|52061-73-1 https://www.jk-sci.com/products/j5310858 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/200073.png?v=1791415081 L-Cystine bis-amide dihydrochloride, Purity by HPLC ≥ 95% | 22671-21-2 L-Cystine bis-amide dihydrochloride|10858|22671-21-2 https://www.jk-sci.com/products/s57c4x-116665 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_163ca97f-71c4-400d-a9cf-ad236d261008.png?v=1791382395 Valproate Impurity 65, 90.80% Valproate Impurity 65|C4X-116665 https://www.jk-sci.com/products/s57c4x-116711 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/33c4db492d5ed06cc168d3751d67623d.jpg?v=1791382378 Bedaquiline Impurity 11, 94.80% | 5409-58-5 Bedaquiline Impurity 11|C4X-116711|5409-58-5 https://www.jk-sci.com/products/j5310621 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3e039c15cb9cf1eba8685cc0ad93bc9c.jpg?v=1791415108 4-(4-Azidophenyl)butyric acid, Assay ≥ 99% | 103489-33-4 4-(4-Azidophenyl)butyric acid|10621|103489-33-4 https://www.jk-sci.com/products/s57c4x-11678 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/91e86f085f460c4b6979f6b848acb5e7.jpg?v=1791382363 Bedaquiline Impurity 8, 98.50% | 2122862-01-3 Bedaquiline Impurity 8|C4X-11678|2122862-01-3 https://www.jk-sci.com/products/a019456130 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e1193d87-3cd7-4b55-8bfc-475aa6202782.png?v=1787976512 0.1%DEPC处理水 0.1%DEPC处理水|9456130 https://www.jk-sci.com/products/s57c4x-1169199 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/58a17f5c6def80fe9874d836ed6d28ba.jpg?v=1791382334 Rosuvastatin dehydroanaloge, 98.80% | 2290571-51-4 Rosuvastatin dehydroanaloge|C4X-1169199|2290571-51-4 https://www.jk-sci.com/products/s57c4x-117611 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e35c8356ed84531a752d5a4e0aa42401.jpg?v=1791382262 Salbutamol EP Impurity E, 97.00% | 24085-03-8 Salbutamol EP Impurity E|C4X-117611|24085-03-8 https://www.jk-sci.com/products/s57c4x-116910 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_4097287d-c83d-41e7-9c71-0ae4911e135a.png?v=1791382348 Rosuvastatin EP Impurity J (Sodium Salt), 91.20% Rosuvastatin EP Impurity J (Sodium Salt)|C4X-116910 https://www.jk-sci.com/products/s57c4x-116983 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/138177_ca9da292-df22-48b2-aaae-32dd0f404aa6.png?v=1791382300 Rosuvastatin Impurity 83, 99.90% | 147118-36-3 Rosuvastatin Impurity 83|C4X-116983|147118-36-3 https://www.jk-sci.com/products/s57c4x-116961 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/218876_01759877-4206-46e7-aae8-4c85b4258d02.png?v=1791382308 Rosuvastatin Impurity 61, 88.70% | 124752-23-4 Rosuvastatin Impurity 61|C4X-116961|124752-23-4 https://www.jk-sci.com/products/j5311434 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a92d60c334059eebd55b04a3a8ba96fb.jpg?v=1791414921 3-(2R,3S)-Phenylisoserine, Purity ≥ 98% (NMR) | 136561-53-0 3-(2R,3S)-Phenylisoserine|11434|136561-53-0 https://www.jk-sci.com/products/j5310914 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d553a9249aa85f4341f88cb5ebd9e4e2.jpg?v=1791415070 1,2-Dimyristoyl-rac-glycero-3-phosphocholine, Assay ≥ 98% (Elemental analysis) | 18656-38-7 1,2-Dimyristoyl-rac-glycero-3-phosphocholine|10914|18656-38-7 https://www.jk-sci.com/products/s57c4x-11767 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/792364_dfdf3671-fb40-40bd-819f-1d23907d3ef3.png?v=1791382225 Salbutamol EP Impurity I, 99.60% | 56796-66-8 Salbutamol EP Impurity I|C4X-11767|56796-66-8 https://www.jk-sci.com/products/j5310932 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c2f01f7963f6a63491ac0665b6fb4d7b.jpg?v=1791415044 1,2-O-Dihexadecyl-rac-glycerol, Purity ≥ 98% (NMR) | 13071-60-8 1,2-O-Dihexadecyl-rac-glycerol|10932|13071-60-8 https://www.jk-sci.com/products/s57c4x-117623 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8eb3750115da6a8f99e11e8b39a3bfff.jpg?v=1791382235 Salbutamol EP impurity N, 90.50% | 149222-15-1 Salbutamol EP impurity N|C4X-117623|149222-15-1 https://www.jk-sci.com/products/s57c4x-116947 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_6fbb3bb4-73a2-470d-9edb-928561f2e9f6.png?v=1791382316 Rosuvastatin Impurity 47, Purity: 98.2% Rosuvastatin Impurity 47|C4X-116947 https://www.jk-sci.com/products/j5310922 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/083388213850ae2fbbe90ad90a738e27.jpg?v=1791415055 1,2-Dipalmitoyl-sn-glycero-3-phosphatidic acid, sodium salt, Purity by HPLC ≥ 99% (w/w) | 71065-87-7 1,2-Dipalmitoyl-sn-glycero-3-phosphatidic acid, sodium salt|10922|71065-87-7 https://www.jk-sci.com/products/s57c4x-1175 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f41396853b968179edb96850df3b335e.jpg?v=1791382291 Macitentan, 99.50% | 441798-33-0 Macitentan|C4X-1175|441798-33-0 https://www.jk-sci.com/products/j5311338 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3ec9942f35f069a4b9043845ecb67517.jpg?v=1791414932 H-His(1-Me)-OMe·HCl, Assay ≥ 71% (Elemental Analysis based on Nitrogen content) || Titration ≥ 27% (c | 57519-09-2 H-His(1-Me)-OMe·HCl|11338|57519-09-2 https://www.jk-sci.com/products/j5311179 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3a858f2919429391265468ce7af8fad8.jpg?v=1791414971 Fmoc-S-sulfo-L-cysteine disodium, Assay ≥ 94% (Elemental analysis based on Carbon content) || Purity by HPLC ≥ 98% | 163558-30-3 Fmoc-S-sulfo-L-cysteine disodium|11179|163558-30-3 https://www.jk-sci.com/products/j5311661 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7bd408e3e9e97c4925b6de7dc2fe0cc3.jpg?v=1791414842 D-2-Cyclohexylglycine trifluoroacetate, Purity by HPLC ≥ 98% | 14328-52-0 D-2-Cyclohexylglycine trifluoroacetate|11661|14328-52-0 https://www.jk-sci.com/products/s57c4x-117616 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/986d9e9a7c8d22120e069cffd3d8ca1b.jpg?v=1791382248 Salbutamol EP Impurity F, 94.10% | 147663-30-7 Salbutamol EP Impurity F|C4X-117616|147663-30-7 https://www.jk-sci.com/products/s57c4x-1176139 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_4a4c1262-e97d-4b94-bf49-9de73e51c4c6.png?v=1791382253 Salbutamol Impurity 139 HCl, Purity: 95.5% Salbutamol Impurity 139 HCl|C4X-1176139 https://www.jk-sci.com/products/s57c4x-117632 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/42714eae9222ace018ec3805e3477fc3.jpg?v=1791382229 Salbutamol EP Impurity A, 95.80% | 870076-72-5 Salbutamol EP Impurity A|C4X-117632|870076-72-5 https://www.jk-sci.com/products/j5311594 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/266fa94de606967d492a3fb9f843510b.jpg?v=1791414893 Boc-S-tert-butyl-L-cysteine dicyclohexylammonium salt, Purity by HPLC ≥ 98% | 60143-30-8 Boc-S-tert-butyl-L-cysteine dicyclohexylammonium salt|11594|60143-30-8 https://www.jk-sci.com/products/j5311044 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d82cd334bebdf8fd93d8725fc999adfd.jpg?v=1791415015 Cyclo(-Gly-L-Glu), Purity by HPLC ≥ 99% | 16364-35-5 Cyclo(-Gly-L-Glu)|11044|16364-35-5 https://www.jk-sci.com/products/s57c4x-117527 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_7d3a4498-8bb4-4bb5-87a8-48463d578890.png?v=1791382282 Macitentan Impurity 27, 99.60% Macitentan Impurity 27|C4X-117527 https://www.jk-sci.com/products/j5311651 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/13c2921d08a2adbb82d6fd623a31f83b.jpg?v=1791414848 D-3,5-Dibromotyrosine, Purity by HPLC ≥ 98% | 50299-42-8 D-3,5-Dibromotyrosine|11651|50299-42-8 https://www.jk-sci.com/products/s57c4x-117688 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f1c0ee28fa4919750bc0bc93e7573bf1.jpg?v=1791382213 Salbutamol Impurity 88, 87.80% | 156339-89-8 Salbutamol Impurity 88|C4X-117688|156339-89-8 https://www.jk-sci.com/products/s57c4x-117722 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d030c605f6d6018d8b0bd1ae50153db9.jpg?v=1791382203 Hydrochlorothiazide Impurity 22, 94.70% | 63779-86-2 Hydrochlorothiazide Impurity 22|C4X-117722|63779-86-2 https://www.jk-sci.com/products/s57c4x-117811 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1024594_ad44a639-aac8-4211-99e5-e4c191a9febf.png?v=1791382196 Olanzapine Impurity 11, 90.50% | 1017241-36-9 Olanzapine Impurity 11|C4X-117811|1017241-36-9 https://www.jk-sci.com/products/j5311674 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e23c8029193abeb7a1875d22de035d80.jpg?v=1791414825 D-Tryptophan benzyl ester hydrochloride, Purity by HPLC ≥ 98% | 22839-16-3 D-Tryptophan benzyl ester hydrochloride|11674|22839-16-3 https://www.jk-sci.com/products/j5311669 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c775cfc763957aa957b0a241a08f7750.jpg?v=1791414831 Ne-Boc-D-lysine allyl ester hydrochloride, Assay by titration ≥ 99% || Purity by HPLC ≥ 98% | 218962-73-3 Ne-Boc-D-lysine allyl ester hydrochloride|11669|218962-73-3 https://www.jk-sci.com/products/s57c4x-117821 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/508646_ca8b25ab-bf90-4875-bc22-15a585206a2c.png?v=1791382184 Olanzapine Impurity 21, Purity: 98.7% | 60091-87-4 Olanzapine Impurity 21|C4X-117821|60091-87-4 https://www.jk-sci.com/products/a019456169 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_5d7ede4a-cf12-4eda-8f11-26fe17b763af.png?v=1787976469 Phosphate buffered saline powder (1×PBS, calcium and magnesium free) Phosphate buffered saline powder (1×PBS, calcium and magnesium free)|9456169 https://www.jk-sci.com/products/s57c4x-11785 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/560200_d0bcc546-3141-4876-9eec-2f8c3ee67cb0.png?v=1791382177 Olanzapine Impurity 5, 98.70% | 138564-60-0 Olanzapine Impurity 5|C4X-11785|138564-60-0 https://www.jk-sci.com/products/s57c4x-118110 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/622191_d3fe4737-4535-44f0-9b4f-74511bd575ad.png?v=1791382164 Eslicarbazepine, 97.70% | 104746-04-5 Eslicarbazepine|C4X-118110|104746-04-5 https://www.jk-sci.com/products/s57c4x-118131 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_f7811276-cf82-4d2b-b6ad-9acf5f7b2526.png?v=1791382151 Carbamazepine Impurity 31, 99.90% Carbamazepine Impurity 31|C4X-118131 https://www.jk-sci.com/products/a019456173 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_b60807a8-fea5-4624-939b-a4440191f29f.png?v=1787976462 Tris boric acid electrophoresis buffer (5×TBE) Tris boric acid electrophoresis buffer (5×TBE)|9456173 https://www.jk-sci.com/products/j5311699 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c009fca7c15e520caca4610f9220443d.jpg?v=1791414803 b-Cyclopropyl-D-Ala-OH, Chiral HPLC > 99% (ee) || Purity ≥ 98% | 121786-39-8 b-Cyclopropyl-D-Ala-OH|11699|121786-39-8 https://www.jk-sci.com/products/s57c4x-11819 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/169f98785f9663f9f6459a15efbaacc4.jpg?v=1791382147 Bedaquiline Impurity 9, 98.90% | 791633-38-0 Bedaquiline Impurity 9|C4X-11819|791633-38-0 https://www.jk-sci.com/products/s57c4x-118375 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_24573903-7eb7-485c-af9c-a40b38458ee9.png?v=1791382126 Terbutaline Impurity 75, Purity: 99.9% Terbutaline Impurity 75|C4X-118375 https://www.jk-sci.com/products/j5311678 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/edabacc0791435a6be06bcfb564054c6.jpg?v=1791414815 L-Glutamic acid g-methyl ester a-tert-butyl ester hydrochloride, Purity by HPLC ≥ 98% | 34582-33-7 L-Glutamic acid g-methyl ester a-tert-butyl ester hydrochloride|11678|34582-33-7 https://www.jk-sci.com/products/a019456172 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_30b24e79-70c7-4108-853a-f2bc0df0e482.png?v=1787976465 Citric acid sodium citrate powder, 10 mmol/L, pH 6.0 Citric acid sodium citrate powder, 10 mmol/L, pH 6.0|9456172 https://www.jk-sci.com/products/j5311712 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/30c19fe0f5cf52ca6c12dc2e0811122c.jpg?v=1791414786 Z-1,3-diaminopropane·HCl, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 17400-34-9 Z-1,3-diaminopropane·HCl|11712|17400-34-9 https://www.jk-sci.com/products/j5311728 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5aa0f2ce67143295e85ff9ed96c4bc24.jpg?v=1791414767 Z-Gly-Gly-Gly-Gly-OH, Purity by HPLC ≥ 97% | 7770-50-5 Z-Gly-Gly-Gly-Gly-OH|11728|7770-50-5 https://www.jk-sci.com/products/s57c4x-118334 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/05299bf90436fe6acdf58a238ab579ea.jpg?v=1791382138 Terbutaline Impurity 34, 91.70% | 28924-18-7 Terbutaline Impurity 34|C4X-118334|28924-18-7 https://www.jk-sci.com/products/a019456174 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_42b4e115-250e-40e5-90a3-d8ff35faaeee.png?v=1787976462 Tris boric acid electrophoresis buffer (10×TBE) Tris boric acid electrophoresis buffer (10×TBE)|9456174 https://www.jk-sci.com/products/j5311774 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7b8b17d434f1c33df5a9164165991c6c.jpg?v=1791414748 Acetyl-DL-glutamic acid, Purity by HPLC ≥ 98% | 5817-08-3 Acetyl-DL-glutamic acid|11774|5817-08-3 https://www.jk-sci.com/products/s57c4x-11863 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fa6fd4fa27aef4ee2d4e7df0b5a74109_becafa9a-aa30-436e-a4f4-f44eb549108d.jpg?v=1791382104 Repaglinide EP Impurity C N-acetyl-glutarate, 97.90% | 219921-94-5 Repaglinide EP Impurity C N-acetyl-glutarate|C4X-11863|219921-94-5 https://www.jk-sci.com/products/s57c4x-11861 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e9f372ea920b3ecd5b3838065dd130e8.jpg?v=1791382113 Repaglinide EP Impurity A, 100.00% | 220438-80-2 Repaglinide EP Impurity A|C4X-11861|220438-80-2 https://www.jk-sci.com/products/j5311790 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7b2ecab948f4d7e4a0c66d7e0c75c56c.jpg?v=1791414730 Acetyl-dehydro-alanine, Assay by titration ≥ 99% | 5429-56-1 Acetyl-dehydro-alanine|11790|5429-56-1 https://www.jk-sci.com/products/j5311832 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e071f1aeb8595f5375e7393c91108a94.jpg?v=1791414684 Boc-D-alanine-4-nitrophenyl ester, Purity by HPLC ≥ 99% | 85546-27-6 Boc-D-alanine-4-nitrophenyl ester|11832|85546-27-6 https://www.jk-sci.com/products/s57c4x-11872 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b3d3082d51b81a2aaefacee145ba002a.jpg?v=1791382096 Tamsulosin EP Impurity B, 98.50% | 112101-81-2 Tamsulosin EP Impurity B|C4X-11872|112101-81-2 https://www.jk-sci.com/products/s57c4x-118742 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/315068_eabf98d0-78cf-4244-8267-b6839e11d7f2.png?v=1791382086 Tamsulosin Impurity 42, Purity: 99.8% | 94-71-3 Tamsulosin Impurity 42|C4X-118742|94-71-3 https://www.jk-sci.com/products/s57c4x-11876 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/223659_19f7466c-0912-4f12-91f3-96d02f413357.png?v=1791382079 Tamsulosin EP Impurity F, 93.00% | 6781-17-5 Tamsulosin EP Impurity F|C4X-11876|6781-17-5 https://www.jk-sci.com/products/j5311839 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2a8467dfb19ce0a84cc22336b2f97f3a.jpg?v=1791414678 Boc-D-norvaline N-hydroxysuccinimide ester, Purity by HPLC ≥ 99% | 213178-93-9 Boc-D-norvaline N-hydroxysuccinimide ester|11839|213178-93-9 https://www.jk-sci.com/products/s57c4x-118834 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c3720dc5-46b7-49e3-929c-ca00e895200b.png?v=1791382052 N-Nitrosodemethyl Chlorphenamine, 97.20% N-Nitrosodemethyl Chlorphenamine|C4X-118834 https://www.jk-sci.com/products/s57c4x-118816 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/93bd8809062b69621d71449ecd634777.jpg?v=1791382071 Chlorpheniramine Impurity 16, Purity: 99.5% | 73775-50-5 Chlorpheniramine Impurity 16|C4X-118816|73775-50-5 https://www.jk-sci.com/products/s57c4x-118822 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/546847_99e0bba9-57dc-4a78-b8aa-80921bca005b.png?v=1791382063 Chlorphenamine Impurity 22, 99.30% | 4584-46-7 Chlorphenamine Impurity 22|C4X-118822|4584-46-7 https://www.jk-sci.com/products/s57c4x-11889 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4bb29f8ae7c2613abc23f281dfb9e71c.jpg?v=1791382047 Chlorphenamine EP Impurity C, 90.50% | 20619-12-9 Chlorphenamine EP Impurity C|C4X-11889|20619-12-9 https://www.jk-sci.com/products/s57c4x-119038 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/491391_08bec0fd-9f32-44de-8d97-44ad542e66dc.png?v=1791382035 Captopril Impurity 38, 96.50% | 344-25-2 Captopril Impurity 38|C4X-119038|344-25-2 https://www.jk-sci.com/products/a019456177 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_fac83097-eaaa-49e9-95e2-0e75d35c2319.png?v=1787976457 Phenylmethylsulfonyl fluoride solution, PMSF,100 mmol/L Phenylmethylsulfonyl fluoride solution, PMSF,100 mmol/L|9456177 https://www.jk-sci.com/products/s57c4x-119131 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a57d360f4a36e7d198901ab566b0b992.jpg?v=1791382019 Apatinib-d8 Hydrochloride | 2468771-44-8 Apatinib-d8 Hydrochloride|C4X-119131|2468771-44-8 https://www.jk-sci.com/products/j5311872 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f244e95dd49aa90639684e0fbfa92d64.jpg?v=1791414656 Na-Boc-Ne-isopropyl-L-lysine, Assay by titration ≥ 99% (HClO4) | 66880-55-5 Na-Boc-Ne-isopropyl-L-lysine|11872|66880-55-5 https://www.jk-sci.com/products/j5311842 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4c417889211d919ccb257019329ac3b3.jpg?v=1791414670 Boc-Nin-formyl-D-1,2,3,4-tetrahydronorharmane-3-carboxylic acid, Assay by titration ≥ 86% || Purity by HPLC ≥ 99% | 327603-49-6 Boc-Nin-formyl-D-1,2,3,4-tetrahydronorharmane-3-carboxylic acid|11842|327603-49-6 https://www.jk-sci.com/products/j5311918 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8b44cb6aac92afc1da7240d25def5d3c.jpg?v=1791414618 Benzyl-L-valine methyl ester hydrochloride, Assay by titration ≥ 98% || Purity by HPLC ≥ 99% | 177721-72-1 Benzyl-L-valine methyl ester hydrochloride|11918|177721-72-1 https://www.jk-sci.com/products/j5311908 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6302851f426e52cfe3f2f0d9da89e9d6.jpg?v=1791414629 Na-Benzyl-D-alanine methyl ester hydrochloride, Assay by titration ≥ 98% || Purity by HPLC ≥ 99% | 95071-12-8 Na-Benzyl-D-alanine methyl ester hydrochloride|11908|95071-12-8 https://www.jk-sci.com/products/j5311956 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/028b72a77440ef41cb2d19607963494e.jpg?v=1791414601 Fmoc-S-acetamidomethyl-L-cysteine N-hydroxysuccinimide ester, Purity by HPLC ≥ 98% | 182410-75-9 Fmoc-S-acetamidomethyl-L-cysteine N-hydroxysuccinimide ester|11956|182410-75-9 https://www.jk-sci.com/products/j5311891 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/47fb113d6a3798ac9ba20df55181c7a7.jpg?v=1791414640 Na-Boc-L-tryptophan amide, Purity by HPLC ≥ 99% | 62549-92-2 Na-Boc-L-tryptophan amide|11891|62549-92-2 https://www.jk-sci.com/products/j5311935 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f57a2f059b784fc4451fea2d9760061a.jpg?v=1791414607 Chloroacetyl-L-norleucine, Assay by titration ≥ 99% | 56787-36-1 Chloroacetyl-L-norleucine|11935|56787-36-1 https://www.jk-sci.com/products/s57c4x-119322 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/421463_d3b82e54-3306-449f-abed-b5d9e5b53ae6.png?v=1791382009 Cefepime, 94.50% | 88040-23-7 Cefepime|C4X-119322|88040-23-7 https://www.jk-sci.com/products/j5311960 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9b0d33b3baac252f93efa0f56598d932.jpg?v=1791414590 Na-Fmoc-Ng-xanthyl-D-asparagine, Purity by HPLC ≥ 99% | 353236-19-8 Na-Fmoc-Ng-xanthyl-D-asparagine|11960|353236-19-8 https://www.jk-sci.com/products/s57c4x-11936 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_30dff9c4-cb20-4ab9-82f4-ddc9fb932e6a.png?v=1791382000 Cefepime EP Impurity F, 90.50% Cefepime EP Impurity F|C4X-11936 https://www.jk-sci.com/products/a01945898 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/517355_ff2fbf04-1594-4a3a-a991-48d09f77956c.png?v=1790205880 4-Fluoro-1,3-dioxolan-2-one, 98% | 114435-02-8 4-Fluoro-1,3-dioxolan-2-one, 98%|945898|114435-02-8 https://www.jk-sci.com/products/s57c4x-11944 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8ba5ef9fd5b4c2a92bb5eef2bbc50e67.jpg?v=1791381996 Lamivudine EP Impurity A(2R,5S)Monomer, 96.70% | 173829-09-9 Lamivudine EP Impurity A(2R,5S)Monomer|C4X-11944|173829-09-9 https://www.jk-sci.com/products/s57c4x-11949 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/460388_fcaaa6ec-4024-456a-9943-5faa35e1528d.png?v=1791381990 Lamivudine EP Impurity F, 99.90% | 66-22-8 Lamivudine EP Impurity F|C4X-11949|66-22-8 https://www.jk-sci.com/products/j5312006 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0193cdd15fd407fcaebc3ae2c70ae839.jpg?v=1791414569 S-4-Methoxyltrityl-L-cysteine, Purity by HPLC ≥ 97% | 177582-20-6 S-4-Methoxyltrityl-L-cysteine|12006|177582-20-6 https://www.jk-sci.com/products/j5312049 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d406cc7cf6d0ce4e0542219e33555c76.jpg?v=1791414553 Gly-b-Ala-NH2·HCl, Purity by HPLC ≥ 99% | 15855-91-1 Gly-b-Ala-NH2·HCl|12049|15855-91-1 https://www.jk-sci.com/products/j5312031 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/437d407a3c435c82a7acfaf9184a930d.jpg?v=1791414558 Nin-Formyl-D-tryptophan hydrochloride, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 367453-01-8 Nin-Formyl-D-tryptophan hydrochloride|12031|367453-01-8 https://www.jk-sci.com/products/s57c4x-119513 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/283382_cefaaece-5f1c-4257-be50-c497e327c296.png?v=1791381987 D-Alfa-Tocopherol Acetate, 99.10% | 58-95-7 D-Alfa-Tocopherol Acetate|C4X-119513|58-95-7 https://www.jk-sci.com/products/j5312097 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/03f1e704a7f4d637ec5952b691c694ea.jpg?v=1791414537 Phe-Phe-OMe·HCl, Purity by HPLC ≥ 98% | 38017-65-1 Phe-Phe-OMe·HCl|12097|38017-65-1 https://www.jk-sci.com/products/s57c4x-119520 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/569826_1093a3f6-3495-4b6d-a596-72d848eb92b4.png?v=1791381984 Tocopherol Impurity 20, 99.00% | 7695-91-2 Tocopherol Impurity 20|C4X-119520|7695-91-2 https://www.jk-sci.com/products/s57c4x-11971 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/739fb28888569e124ad67e0b36ce4adf.jpg?v=1791381981 Sodium Fusidate EP Impurity A, 95.70% | 80445-74-5 Sodium Fusidate EP Impurity A|C4X-11971|80445-74-5 https://www.jk-sci.com/products/s57c4x-119719 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/04896f45acf7e164b1c7fd7150495550.jpg?v=1791381969 Sodium Fusidate EP Impurity O Sodium Salt, 92.60% | 55601-53-1 Sodium Fusidate EP Impurity O Sodium Salt|C4X-119719|55601-53-1 https://www.jk-sci.com/products/s57c4x-119711 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9e6558f120f578a20c925c00e327dfad.jpg?v=1791381974 Sodium Fusidate EP Impurity K, 94.10% | 4701-54-6 Sodium Fusidate EP Impurity K|C4X-119711|4701-54-6 https://www.jk-sci.com/products/s57c4x-11973 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_29ae22c2-a049-4f46-8da3-e77a0b864654.png?v=1791381961 Sodium Fusidate EP Impurity C, 90.90% Sodium Fusidate EP Impurity C|C4X-11973 https://www.jk-sci.com/products/s57c4x-11975 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_b13a99c4-14fe-40b0-8fce-1294c219ce87.png?v=1791381961 Sodium Fusidate EP Impurity E, 93.40% Sodium Fusidate EP Impurity E|C4X-11975 https://www.jk-sci.com/products/s57c4x-119713 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/51ca4a705849f1c8b72ed3d1da96a76a.jpg?v=1791381970 Sodium Fusidate EP Impurity M, 98.60% | 1013937-16-0 Sodium Fusidate EP Impurity M|C4X-119713|1013937-16-0 https://www.jk-sci.com/products/j5312117 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cb4b2611a412dccd726977e021f6bbc3.jpg?v=1791414524 L-3,5-Diiodotyrosine ethyl ester hydrochloride, Purity by HPLC ≥ 97% | 74051-47-1 L-3,5-Diiodotyrosine ethyl ester hydrochloride|12117|74051-47-1 https://www.jk-sci.com/products/s57c4x-11977 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a31eae53075ec3c1d8e53aefb8a89608.jpg?v=1791381957 Sodium Fusidate EP Impurity G, 99.80% | 4680-37-9 Sodium Fusidate EP Impurity G|C4X-11977|4680-37-9 https://www.jk-sci.com/products/s57c4x-1198 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e8ceaababff7b0e8f5d5c1dda731021e.jpg?v=1791381944 Eltrombopag Olamine, Purity: 100.0% | 496775-62-3 Eltrombopag Olamine|C4X-1198|496775-62-3 https://www.jk-sci.com/products/j5312123 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d7850e4570881c709381f2176f407ce6.jpg?v=1791414518 L-Tyrosine hydrazide, Purity by HPLC ≥ 99% | 7662-51-3 L-Tyrosine hydrazide|12123|7662-51-3 https://www.jk-sci.com/products/a01946066 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4d0ae5c00c78917693814bce30819dd7.jpg?v=1787976413 2-Chloro-6-methoxyisonicotinic acid, 97% | 6313-51-5 2-Chloro-6-methoxyisonicotinic acid, 97%|946066|6313-51-5 https://www.jk-sci.com/products/s57c4x-119810 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_b72e1219-ad9f-4673-b547-881e1f4606a1.png?v=1791381944 Eltrombopag Impurity 10, 87.70% Eltrombopag Impurity 10|C4X-119810 https://www.jk-sci.com/products/j5312134 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/30a04c55f56c03ecb4113f7e32a2f329.jpg?v=1791414505 5-Hydroxy-L-tryptophan ethyl ester hydrochloride, Purity by HPLC ≥ 99% | 57432-62-9 5-Hydroxy-L-tryptophan ethyl ester hydrochloride|12134|57432-62-9 https://www.jk-sci.com/products/j5307095 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/390f43a7efd1def2380f14a07407e818.jpg?v=1791416020 Z-b-cyclohexyl-D-alanine dicyclohexylammonium salt, Purity by HPLC ≥ 98% | 214852-64-9 Z-b-cyclohexyl-D-alanine dicyclohexylammonium salt|07095|214852-64-9 https://www.jk-sci.com/products/j5307363 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/743ed99ddc6532303975390acd450c8e.jpg?v=1791415670 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one, Purity by HPLC 99 - 100% | 2898-08-0 1,3-Dihydro-5-phenyl-1,4-benzodiazepin-2-one|07363|2898-08-0 https://www.jk-sci.com/products/j5306217 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ef3bbb1f7a9b4b0e747125dc45496132.jpg?v=1791416709 3-(3'-Pyridyl)-D-alanine, Purity by HPLC ≥ 99% | 70702-47-5 3-(3'-Pyridyl)-D-alanine|06217|70702-47-5 https://www.jk-sci.com/products/j5307564 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/75544603a44a7b8bfb428ac66be95ec1.jpg?v=1791415525 Z-N-Me-L-norleucine, Purity by HPLC ≥ 98% || Purity ≥ 98% | 225386-32-3 Z-N-Me-L-norleucine|07564|225386-32-3 https://www.jk-sci.com/products/s57c4x-119811 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/422877971a7a283f6dbddd561df66b3d.jpg?v=1791381938 Eltrombopag, 99.50% | 496775-61-2 Eltrombopag|C4X-119811|496775-61-2 https://www.jk-sci.com/products/j5308309 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5c25a7e3f48c73fffb3bc05375fe79f2.jpg?v=1791415422 Ala-Pro-NH2·HCl, Assay ≥ 76% (Elemental Analysis based on Nitrogen content) || Assay by titration | 76399-73-0 Ala-Pro-NH2·HCl|08309|76399-73-0 https://www.jk-sci.com/products/a01946227 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/364135.png?v=1787976400 6,7-Dimethoxy-4-methylcoumarin, 98% | 4281-40-7 6,7-Dimethoxy-4-methylcoumarin, 98%|946227|4281-40-7 https://www.jk-sci.com/products/j5308501 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5c0fe7ce08635e3e67b2885f76940368.jpg?v=1791415372 L-Glutamine 7-amido-4-methylcoumarin hydrobromide, Assay ≥ 95% (Assay) | 201851-47-0 L-Glutamine 7-amido-4-methylcoumarin hydrobromide|08501|201851-47-0 https://www.jk-sci.com/products/s57c4x-11982 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fc4ccd8a91b9b37375479f70420fc785.jpg?v=1791381938 Eltrombopag Methyl Ester, Purity: 100.0% | 1246929-01-0 Eltrombopag Methyl Ester|C4X-11982|1246929-01-0 https://www.jk-sci.com/products/j5309444 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/664d57047ab796dd393f144d2fac5ba1.jpg?v=1791415246 Lysinoalanine·2HCl (diastereomeric mixture: LL + LD), Assay ≥ 99% (Nth 13.72% by Elemental analysis) || Titration Chloride content : ≤ | 4418-81-9 Lysinoalanine·2HCl (diastereomeric mixture: LL + LD)|09444|4418-81-9 https://www.jk-sci.com/products/j5310097 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/01403e79db35c0d4b5316855d6f2f184.jpg?v=1791415165 Na-Tosyl-L-lysine chloromethylketone hydrochloride, Assay ≥ 99% || Purity by HPLC ≥ 98% || Titration ≥ 9% (Chloride Content) | 4272-74-6 Na-Tosyl-L-lysine chloromethylketone hydrochloride|10097|4272-74-6 https://www.jk-sci.com/products/s57c4x-119842 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0659f3de84e7899ada333fa8b797c2e3_5cef6d7a-577c-4328-aecf-b008f4023cd8.jpg?v=1791381929 Eltrombopag Impurity 42, Purity: 99.4% | 612-87-3 Eltrombopag Impurity 42|C4X-119842|612-87-3 https://www.jk-sci.com/products/s57c4x-119863 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/407422_59810b0b-7c5c-4604-bb0e-869b2fb3fe93.png?v=1791381922 Eltrombopag Impurity 63 HCl, Purity: 97.0% | 60481-51-8 Eltrombopag Impurity 63 HCl|C4X-119863|60481-51-8 https://www.jk-sci.com/products/s57c4x-11987 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7f0bbeb940331d9bfa70fca5c885ded5.jpg?v=1791381923 Eltrombopag Impurity 7, 95.50% | 1428987-69-2 Eltrombopag Impurity 7|C4X-11987|1428987-69-2 https://www.jk-sci.com/products/s57c4x-119873 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_98e4ed20-a7d3-4f49-94cb-6b267290cff2.png?v=1791381917 Eltrombopag Impurity 73, 96.90% Eltrombopag Impurity 73|C4X-119873 https://www.jk-sci.com/products/j5310912 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c91336b91ed8af3982bba6dfb16985e9.jpg?v=1791415071 1,2-Dilauroyl-sn-glycero-3-phosphoethanolamine, Purity by HPLC ≥ 98% | 59752-57-7 1,2-Dilauroyl-sn-glycero-3-phosphoethanolamine|10912|59752-57-7 https://www.jk-sci.com/products/j5310594 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a7c8663816f1bbf5286df26865cb4f42.jpg?v=1791415124 3-(4'-Hydroxyphenyl)propionic acid-OSu | 34071-95-9 3-(4'-Hydroxyphenyl)propionic acid-OSu|10594|34071-95-9 https://www.jk-sci.com/products/s57c4x-11994 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a1ce3fdd38296255b6fec08186c64941_8d7790d7-337c-4e47-8515-901ca4129f8f.jpg?v=1791381896 Simvastatin EP Impurity D, 90.80% | 476305-24-5 Simvastatin EP Impurity D|C4X-11994|476305-24-5 https://www.jk-sci.com/products/s57c4x-11989 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_8bd5981d-17bd-4a07-80d3-13c4663e4b95.png?v=1791381907 Eltrombopag Impurity 9, 99.90% Eltrombopag Impurity 9|C4X-11989 https://www.jk-sci.com/products/s57c4x-11992 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/632770.png?v=1791381907 Simvastatin EP Impurity B, 94.40% | 145576-25-6 Simvastatin EP Impurity B|C4X-11992|145576-25-6 https://www.jk-sci.com/products/j5310927 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ffd1c6c86decda01b7b80348a3f780d6.jpg?v=1791415050 1,2-Distearoyl-rac-glycero-3-phosphocholine, Assay ≥ 99% (Cth : 66.88% Elemental analysis) | 816-93-3 1,2-Distearoyl-rac-glycero-3-phosphocholine|10927|816-93-3 https://www.jk-sci.com/products/s57c4x-119881 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ec22fd77-72ec-4e02-ab72-b99104b59ca0.png?v=1791381911 Eltrombopag Impurity 81, Purity: 99.7% Eltrombopag Impurity 81|C4X-119881 https://www.jk-sci.com/products/s57c4x-119927 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/410d1655e1cf4838a25e9cd4bc886f35.jpg?v=1791381902 Simvastatin Impurity 27, 93.70% | 132487-01-5 Simvastatin Impurity 27|C4X-119927|132487-01-5 https://www.jk-sci.com/products/s57c4x-11996 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/920277_1e03bda3-bd6c-4564-9518-99ccc22f986d.png?v=1791381890 Simvastatin EP Impurity F, 98.80% | 79952-44-6 Simvastatin EP Impurity F|C4X-11996|79952-44-6 https://www.jk-sci.com/products/s57c4x-12002 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bccb5f4c623047c8aa1a955861c88dc6.jpg?v=1791381891 1-Pentanone, 5-methoxy-1-[4-(trifluoromethyl) phenyl] -, oxime, Purity: 98.2% | 61747-22-6 1-Pentanone, 5-methoxy-1-[4-(trifluoromethyl) phenyl] -, oxime|C4X-12002|61747-22-6 https://www.jk-sci.com/products/s57c4x-120141 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bc6632533f93f9dc905a0fb9eb7410d3.jpg?v=1791381874 Cefotaxime open ring lactone, 91.70% | 75679-12-8 Cefotaxime open ring lactone|C4X-120141|75679-12-8 https://www.jk-sci.com/products/s57c4x-12012 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fc1d8f373c0e11cd4e0dfc0a1161c71e.jpg?v=1791381885 Cefotaxime EP Impurity B, 88.10% | 66340-28-1 Cefotaxime EP Impurity B|C4X-12012|66340-28-1 https://www.jk-sci.com/products/j5311137 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a77b89993748fbbc3678462018dc75b9.jpg?v=1791414976 Ethyleneglycolmonopentylether, Assay ≥ 93.5% || Purity by GC ≥ 95% | 6196-58-3 Ethyleneglycolmonopentylether|11137|6196-58-3 https://www.jk-sci.com/products/s57c4x-12013 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/637d485753292e0894a8f3b1be103aaf.jpg?v=1791381879 Cefotaxime EP Impurity C, 93.50% | 66403-32-5 Cefotaxime EP Impurity C|C4X-12013|66403-32-5 https://www.jk-sci.com/products/j5311409 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/61d5d5715dd92aaf106eac1a906dab1c.jpg?v=1791414926 L-Glutamic acid g-methyl ester a-amide hydrochloride | 70830-50-1 L-Glutamic acid g-methyl ester a-amide hydrochloride|11409|70830-50-1 https://www.jk-sci.com/products/j5311617 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/84e3e31c0b28e4b98ca4f5d7d8d61cd6.jpg?v=1791414884 Cyclo(-Phe-Pro), Purity by HPLC ≥ 99% | 3705-26-8 Cyclo(-Phe-Pro)|11617|3705-26-8 https://www.jk-sci.com/products/j5311653 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5ac6eb8da90c17daddd3a7ca22996768.jpg?v=1791414842 L-a-Aminobutyric acid amide, Purity by HPLC ≥ 98% | 143164-46-9 L-a-Aminobutyric acid amide|11653|143164-46-9 https://www.jk-sci.com/products/s57c4x-12021 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/40f3a56325ec5d85e7e132f3b277fe6b.jpg?v=1791381868 Melitracen Impurity 1, 98.20% | 85118-29-2 Melitracen Impurity 1|C4X-12021|85118-29-2 https://www.jk-sci.com/products/s57c4x-12025 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/442146.png?v=1791381863 Melitracen Impurity 5, Purity: 99.2% | 111-18-2 Melitracen Impurity 5|C4X-12025|111-18-2 https://www.jk-sci.com/products/s57c4x-120212 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_71958e70-9101-4a88-8d61-bf46dbd01564.png?v=1791381863 Melitracen Impurity 12, Purity: 98.9% Melitracen Impurity 12|C4X-120212 https://www.jk-sci.com/products/j5311670 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ab11a9eb210c6b92ead7bc3894f49254.jpg?v=1791414830 D-Phenylglycine amide hydrochloride, Assay ≥ 80% (elemental analysis) || Assay by titration ~ 18% (chloride content) | 63291-39-4 D-Phenylglycine amide hydrochloride|11670|63291-39-4 https://www.jk-sci.com/products/s57c4x-120320 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9e82f872ec81a0f557201562274d126c.jpg?v=1791381850 Bupropion Impurity 20, Purity: 98.8% | 1346603-00-6 Bupropion Impurity 20|C4X-120320|1346603-00-6 https://www.jk-sci.com/products/s57c4x-120313 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c7d19b85ce64dd137dc49fef0459066d.jpg?v=1791381853 Bupropion Impurity 13 HCl, 99.00% | 2227990-16-9 Bupropion Impurity 13 HCl|C4X-120313|2227990-16-9 https://www.jk-sci.com/products/j5311690 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/81616a7efd7e8ac4ff1cd5dcfab16164.jpg?v=1791414808 L-Phenylglycine ethyl ester hydrochloride, Assay 82.5% (elemental analysis) || Titration Chloride content: 16.5% | 59410-82-1 L-Phenylglycine ethyl ester hydrochloride|11690|59410-82-1 https://www.jk-sci.com/products/s57c4x-120324 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b72edd1aa0782ca3cd5adcd69871d70e.jpg?v=1791381844 3-Deschloro-2-Chloro Bupropion HCl, 95.00% | 1049718-57-1 3-Deschloro-2-Chloro Bupropion HCl|C4X-120324|1049718-57-1 https://www.jk-sci.com/products/j5311714 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/191eeeddc02480edc44e94e94e11a74f.jpg?v=1791414776 N-Methyl-L-isoleucine methyl ester hydrochloride, Purity by HPLC ≥ 98% | 3339-43-3 N-Methyl-L-isoleucine methyl ester hydrochloride|11714|3339-43-3 https://www.jk-sci.com/products/j5311783 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d62fe7c3cf7338ac10ca49dc312202d7.jpg?v=1791414742 Acetyl-D-norleucine, Purity by HPLC ≥ 99% | 54896-21-8 Acetyl-D-norleucine|11783|54896-21-8 https://www.jk-sci.com/products/s57c4x-12033 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/76f36310fbeaa6c6dbb52c860d870d30.jpg?v=1791381843 Bupropion Impurity 3, 99.50% | 152943-33-4 Bupropion Impurity 3|C4X-12033|152943-33-4 https://www.jk-sci.com/products/j5311835 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4c5218af8b1643e93ca0d61ab3de3bd6.jpg?v=1791414684 Boc-D-glutamic acid g-allyl ester, Assay ≥ 99% || Purity by HPLC ≥ 99% | 259221-91-5 Boc-D-glutamic acid g-allyl ester|11835|259221-91-5 https://www.jk-sci.com/products/ts246cs-0107365 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/614068.png?v=1791320478 7-(Trifluoromethyl)-1,2,3,4-tetrahydroquinoline, 98% | 450-62-4 7-(Trifluoromethyl)-1,2,3,4-tetrahydroquinoline|CS-0107365|450-62-4 https://www.jk-sci.com/products/s57c4x-120353 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_9bfb5d98-0e9e-4d6a-8e7f-235d62a2d5ea.png?v=1791381830 Bupropion Impurity 53 HCl, 99.40% Bupropion Impurity 53 HCl|C4X-120353 https://www.jk-sci.com/products/j5311907 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fb542183fcb0fccfced090357d4eb2d8.jpg?v=1791414630 Na-Benzyl-L-asparagine mehtyl ester hydrochloride, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 402929-49-1 Na-Benzyl-L-asparagine mehtyl ester hydrochloride|11907|402929-49-1 https://www.jk-sci.com/products/j5311864 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/60f5d97fd5ca19a931d4a3bb2ba4cb0c.jpg?v=1791414661 Boc-O-methyl-L-homoserine dicyclohexylammonium salt, Purity by HPLC ≥ 99% | 349545-91-1 Boc-O-methyl-L-homoserine dicyclohexylammonium salt|11864|349545-91-1 https://www.jk-sci.com/products/a01946307 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/07d9c39b026cecc4e70b1bf6d6516d83.jpg?v=1788913377 Ethyl 2,3,4,6-tetra-O-acetyl-1-thio-b-D-galactopyranoside, 95% | 55722-49-1 Ethyl 2,3,4,6-tetra-O-acetyl-1-thio-b-D-galactopyranoside, 95%|946307|55722-49-1 https://www.jk-sci.com/products/s57c4x-120441 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/263922_e049afdf-4b46-4812-8ef2-cacda758a3f0.png?v=1791381825 Cefotiam Impurity 41, Purity: 99.9% | 61607-68-9 Cefotiam Impurity 41|C4X-120441|61607-68-9 https://www.jk-sci.com/products/j5311919 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/17f3c5eae973db9837bef1b3d02253dc.jpg?v=1791414618 Benzoyl-L-norleucine, Purity by HPLC ≥ 99% | 54430-46-5 Benzoyl-L-norleucine|11919|54430-46-5 https://www.jk-sci.com/products/s57c4x-12081 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4357b6802331de8bafd9e4be32117f6b.jpg?v=1791381813 Posaconazole Impurity 1, 99.00% | 2243786-01-6 Posaconazole Impurity 1|C4X-12081|2243786-01-6 https://www.jk-sci.com/products/s57c4x-12055 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a11c834cdb7e413fa3d29c0689a31155.jpg?v=1791381816 Tazobactam Impurity 5, Purity: 95.7% | 89789-07-1 Tazobactam Impurity 5|C4X-12055|89789-07-1 https://www.jk-sci.com/products/s57c4x-1208119 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ad66d990e8affd620baf54747e5187c2.jpg?v=1791381809 Posaconazole Impurity 119, 97.90% | 2243786-03-8 Posaconazole Impurity 119|C4X-1208119|2243786-03-8 https://www.jk-sci.com/products/s57c4x-120535 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c1b09bf6fcb43fd557c9ec17cde26594.jpg?v=1791381819 Tazobactam Impurity 35, Purity: 98.6% | 125949-72-6 Tazobactam Impurity 35|C4X-120535|125949-72-6 https://www.jk-sci.com/products/s57c4x-1208122 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b7ab0a326b33c0de8565533b49a6da77.jpg?v=1791381800 Posaconazole Impurity 122, 96.20% | 687132-01-0 Posaconazole Impurity 122|C4X-1208122|687132-01-0 https://www.jk-sci.com/products/j5311958 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/227975c6aa5908b6c9299ef92572d36d.jpg?v=1791414595 Fmoc-S-xanthyl-L-cysteine, Purity by HPLC ≥ 98% | 186829-25-4 Fmoc-S-xanthyl-L-cysteine|11958|186829-25-4 https://www.jk-sci.com/products/j5312030 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8f2a59a3ba750efd1cd8f644dfc6b682.jpg?v=1791414558 D-Threoninol, Purity ≥ 97% (NMR) | 44520-55-0 D-Threoninol|12030|44520-55-0 https://www.jk-sci.com/products/s57c4x-120815 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3520844ca21e18f8f666de296ba7cc68.jpg?v=1791381794 Posaconazole Impurity 15(S,S,S,S), 98.90% | 1246391-73-0 Posaconazole Impurity 15(S,S,S,S)|C4X-120815|1246391-73-0 https://www.jk-sci.com/products/s57c4x-120816 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/33b4bd7191d8af78db4abec325130490.jpg?v=1791381789 Posaconazole Impurity 16(S,R,S,S), 98.50% | 213381-02-3 Posaconazole Impurity 16(S,R,S,S)|C4X-120816|213381-02-3 https://www.jk-sci.com/products/j5312121 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/39e15440d8ee42712b23b036ca214886.jpg?v=1791414518 O-Phospho-L-tyrosine, Purity by HPLC ≥ 97% | 21820-51-9 O-Phospho-L-tyrosine|12121|21820-51-9 https://www.jk-sci.com/products/j5312079 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/439b1dbe1f265e768bfffb90893a4ea9.jpg?v=1791414542 L-Leucine 9-fluorenylmethyl ester hydrochloride, Assay ≥ 99% (AgNO3) || Purity by HPLC ≥ 99% | 197162-68-8 L-Leucine 9-fluorenylmethyl ester hydrochloride|12079|197162-68-8 https://www.jk-sci.com/products/s57c4x-1208170 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_03b06fcb-d480-4608-adb5-3f4c342f6d75.png?v=1791381787 Posaconazole Impurity 170, Purity: 98.8% Posaconazole Impurity 170|C4X-1208170 https://www.jk-sci.com/products/s57c4x-1208175 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0fa5b58be5776822b92d33921a2d1a4b.jpg?v=1791381781 Posaconazole Impurity 175, 95.40% | 169265-99-0 Posaconazole Impurity 175|C4X-1208175|169265-99-0 https://www.jk-sci.com/products/j5312163 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/12dfa9bb684eb574355ab76e41a1a444.jpg?v=1791414494 Pht-Gly-b-Ala-OH, Assay by titration ≥ 99% || Purity by HPLC ≥ 98% | 17896-84-3 Pht-Gly-b-Ala-OH|12163|17896-84-3 https://www.jk-sci.com/products/s57c4x-1208182 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_69d6d441-c752-4f91-bb43-3bb764e98e7f.png?v=1791381778 Posaconazole Impurity 82, Purity: 95.5% Posaconazole Impurity 82|C4X-1208182 https://www.jk-sci.com/products/j5312208 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/87aa9f93dda4af7c78bcdda134a85595.jpg?v=1791414476 Na-Z-Ng-xanthyl-L-asparagine, Assay by titration ≥ 97% || Purity by HPLC ≥ 99% | 327981-00-0 Na-Z-Ng-xanthyl-L-asparagine|12208|327981-00-0 https://www.jk-sci.com/products/s57c4x-1208196 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_8c7bbf10-6a64-4054-adb3-2f25234e3be8.png?v=1791381773 Posaconazole Impurity 196, 91.40% Posaconazole Impurity 196|C4X-1208196 https://www.jk-sci.com/products/s57c4x-12082 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/325e329a7eca40e15615eba50fc2b69f.jpg?v=1791381769 Posaconazole Impurity 2, 99.20% | 2243786-00-5 Posaconazole Impurity 2|C4X-12082|2243786-00-5 https://www.jk-sci.com/products/s57c4x-120821 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8562fe89cabc3bf6929b1b9a8ad53806.jpg?v=1791381768 Posaconazole Impurity 21(R,R,S,R), 99.40% | 171228-50-5 Posaconazole Impurity 21(R,R,S,R)|C4X-120821|171228-50-5 https://www.jk-sci.com/products/a01946828 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/148309.png?v=1788913366 Benzyl phenyl sulfide, 98% | 831-91-4 Benzyl phenyl sulfide, 98%|946828|831-91-4 https://www.jk-sci.com/products/j5312219 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d25cd97fdad8dd44309b0dffea151a5f.jpg?v=1791414476 Z-L-aspartic acid-di-tert-butyl ester, Purity by HPLC ≥ 98% | 42417-76-5 Z-L-aspartic acid-di-tert-butyl ester|12219|42417-76-5 https://www.jk-sci.com/products/j5312234 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3383f8808e430566633c48362818449f.jpg?v=1791414463 Na-Z-DL-histidine, Purity by HPLC ≥ 99% | 19728-57-5 Na-Z-DL-histidine|12234|19728-57-5 https://www.jk-sci.com/products/s57c4x-120827 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_bffed9eb-0f9c-41c9-bce9-db140b4f1cfa.png?v=1791381759 Posaconazole Impurity 27, 93.10% Posaconazole Impurity 27|C4X-120827 https://www.jk-sci.com/products/j5312241 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2e7d075b88feb5ce1c83ed27f75efba2.jpg?v=1791414457 Z-4-chloro-DL-phenylalanine, Purity by HPLC ≥ 98% | 55478-54-1 Z-4-chloro-DL-phenylalanine|12241|55478-54-1 https://www.jk-sci.com/products/s57c4x-12084 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8929cb776b4eee9c8d8f0de68b214a94.jpg?v=1791381756 Posaconazole Impurity 4, 99.30% | 184177-83-1 Posaconazole Impurity 4|C4X-12084|184177-83-1 https://www.jk-sci.com/products/s57c4x-120842 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/05199c45b5b793295b7e2da3086b07a4.jpg?v=1791381751 Posaconazole Impurity 42, 98.90% | 357189-96-9 Posaconazole Impurity 42|C4X-120842|357189-96-9 https://www.jk-sci.com/products/s57c4x-120844 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2ca5d7883ba6b72e2e083d0f35a2a1f8.jpg?v=1791381746 Posaconazole Impurity 44, Purity: 99.5% | 357189-97-0 Posaconazole Impurity 44|C4X-120844|357189-97-0 https://www.jk-sci.com/products/j5312255 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9b0050cdd8b10d1d6dbec838d72ccb45.jpg?v=1791414451 Z-L-glutamic acid g-cyclohexyl ester dicyclohexylammonium salt, Purity by HPLC ≥ 99% | 111479-43-7 Z-L-glutamic acid g-cyclohexyl ester dicyclohexylammonium salt|12255|111479-43-7 https://www.jk-sci.com/products/s57c4x-120848 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b8b1a92e2ba989be092edcfef560d77f.jpg?v=1791381741 Posaconazole Impurity 48, 97.50% | 1902954-03-3 Posaconazole Impurity 48|C4X-120848|1902954-03-3 https://www.jk-sci.com/products/s57c4x-120851 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2261e156f75c5a2c9e8ac36dd2ecbb73.jpg?v=1791381741 Posaconazole Impurity 51, 91.30% | 357189-94-7 Posaconazole Impurity 51|C4X-120851|357189-94-7 https://www.jk-sci.com/products/s57c4x-120854 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2f3dd2d8b5d7b675b4d0c98bb4f99cdd.jpg?v=1791381733 Posaconazole Impurity 54(R,S,S,S), 99.70% | 2243785-96-6 Posaconazole Impurity 54(R,S,S,S)|C4X-120854|2243785-96-6 https://www.jk-sci.com/products/a01946846 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c6570b304b77a6f08668c4333706073c.jpg?v=1788913361 Triethylene Glycol 2-Bromoethyl Methyl Ether, 95% | 110429-45-3 Triethylene Glycol 2-Bromoethyl Methyl Ether, 95%|946846|110429-45-3 https://www.jk-sci.com/products/s57c4x-120858 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_58f35284-be7e-433a-8eb9-f7ecacfcf7f9.png?v=1791381728 Posaconazole Impurity 58, 98.60% Posaconazole Impurity 58|C4X-120858 https://www.jk-sci.com/products/s57c4x-120874 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/265e0cc3f508bc13b834fdef3f99c496.jpg?v=1791381723 Posaconazole Impurity 74, 99.70% | 170985-86-1 Posaconazole Impurity 74|C4X-120874|170985-86-1 https://www.jk-sci.com/products/j5312292 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f1722a6b734ca066e072c0912ec5517f.jpg?v=1791414446 Z-L-leucine amide, Purity by HPLC ≥ 98% | 4801-79-0 Z-L-leucine amide|12292|4801-79-0 https://www.jk-sci.com/products/s57c4x-120880 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bca3cc5db430ed8fe90dba8a17cc53c6.jpg?v=1791381721 Posaconazole Impurity 80, Purity: 98.3% | 1488301-79-6 Posaconazole Impurity 80|C4X-120880|1488301-79-6 https://www.jk-sci.com/products/s57c4x-12089 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e8259571-acd2-4567-99f3-0f190fbc172a.png?v=1791381717 Posaconazole Impurity 9, 95.80% Posaconazole Impurity 9|C4X-12089 https://www.jk-sci.com/products/s57c4x-12101 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e4ff5134a9163b9db4e962103473030.jpg?v=1791381712 Cefdinir CP Impurity A, 74.30% | 1450758-21-0 Cefdinir CP Impurity A|C4X-12101|1450758-21-0 https://www.jk-sci.com/products/s57c4x-121018 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0bae79d6cfdf25c9fd16a97165e9b8ad.jpg?v=1791381709 Cefdinir CP Impurity R, 92.90% | 178601-88-2 Cefdinir CP Impurity R|C4X-121018|178601-88-2 https://www.jk-sci.com/products/j5312306 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8be92c8a408a6df6068cac24d56f50db.jpg?v=1791414438 Na-Z-Nd-phthaloyl-L-ornithine | 7767-00-2 Na-Z-Nd-phthaloyl-L-ornithine|12306|7767-00-2 https://www.jk-sci.com/products/a01947085 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/104985.png?v=1788913353 N-(tert-Butoxycarbonyloxy)succinimide, 98% | 13139-12-3 N-(tert-Butoxycarbonyloxy)succinimide, 98%|947085|13139-12-3 https://www.jk-sci.com/products/j5312312 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ffd611df24138a82b8467de7fb927123.jpg?v=1791414435 Z-L-Phenylalanine tert-butyl ester, Purity ≥ 98% | 7670-20-4 Z-L-Phenylalanine tert-butyl ester|12312|7670-20-4 https://www.jk-sci.com/products/j5312330 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9933ffbd18f868d4f3b19a7b9099efc2.jpg?v=1791414430 Z-O-tert-butyl-L-threonine benzyl ester | 212632-22-9 Z-O-tert-butyl-L-threonine benzyl ester|12330|212632-22-9 https://www.jk-sci.com/products/s57c4x-121023 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0ab37096-9b29-4f41-962e-402d322a3f24.png?v=1791381700 Cefdinir CP Impurity F, 90.60% Cefdinir CP Impurity F|C4X-121023 https://www.jk-sci.com/products/j5312357 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f6f8fc685554adc3cbc4dd2056c90cec.jpg?v=1791414426 Z-L-tyrosine ethyl ester, Purity by HPLC ≥ 98% | 16679-94-0 Z-L-tyrosine ethyl ester|12357|16679-94-0 https://www.jk-sci.com/products/j5312383 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6cd6c498c124dff11b77e9f91028c81a.jpg?v=1791414404 DL-Phenylalanine tert-butyl ester hydrochloride, Purity by HPLC ≥ 99% | 75898-47-4 DL-Phenylalanine tert-butyl ester hydrochloride|12383|75898-47-4 https://www.jk-sci.com/products/j5312412 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cb93874112fa765c428a0dd7c0713654.jpg?v=1791414359 D-Ala-D-Leu-OH·TFA, Purity by HPLC ≥ 98% | 1820579-48-3 D-Ala-D-Leu-OH·TFA|12412|1820579-48-3 https://www.jk-sci.com/products/s57c4x-12103 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/288fc8f3f5769506adaf4736d8582f32.jpg?v=1791381701 Cefdinir CP Impurity O, 91.10% | 79350-10-0 Cefdinir CP Impurity O|C4X-12103|79350-10-0 https://www.jk-sci.com/products/j5312430 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6a6bf0869ae44cc0a8847b774c6a43cd.jpg?v=1791414342 D-Serine ethyl ester hydrochloride, Purity by HPLC ≥ 99% | 104055-46-1 D-Serine ethyl ester hydrochloride|12430|104055-46-1 https://www.jk-sci.com/products/s57c4x-121040 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/94631999814c0f64547ae15d6d326f25.jpg?v=1791381694 Cefdinir Impurity 40, 90.40% | 1330164-22-1 Cefdinir Impurity 40|C4X-121040|1330164-22-1 https://www.jk-sci.com/products/j5312496 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b0f9a73dc019bbaf5999451108be1ded.jpg?v=1791414326 Fmoc-leucine Rink amide AM resin, Mesh Size 100-200 || Substitution (meq/g) 0.3-0.8 meq/g Fmoc-leucine Rink amide AM resin|12496 https://www.jk-sci.com/products/s57c4x-12105 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/66dce0ef5b14bae0b6a98694cba2d8eb.jpg?v=1791381688 Cefdinir CP Impurity T&U, 86.30% | 178949-04-7 Cefdinir CP Impurity T&U|C4X-12105|178949-04-7 https://www.jk-sci.com/products/j5312499 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bfe5eb2b37dc3fa9d26dfc61c377842e.jpg?v=1791414322 Fmoc-L-phenylalanine Rink amide AM resin, Mesh Size 100-200 mesh || Substitution (meq/g) 0.3-0.8 mmol/g Fmoc-L-phenylalanine Rink amide AM resin|12499 https://www.jk-sci.com/products/s57c4x-121053 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/977aa75e7b481a5643adecc50d64a2ba.jpg?v=1791381688 Cefdinir Impurity 53, Purity: 91.0% | 178422-40-7 Cefdinir Impurity 53|C4X-121053|178422-40-7 https://www.jk-sci.com/products/j5312646 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b1d6a818d6bfc956706456c41a96aac3.jpg?v=1791414273 Na-Trityl-Nb-Fmoc-D-2,3-diaminopropionic acid, Purity by HPLC ≥ 99% | 1263047-04-6 Na-Trityl-Nb-Fmoc-D-2,3-diaminopropionic acid|12646|1263047-04-6 https://www.jk-sci.com/products/s57c4x-12108 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2007894e82010308bf8cc273ef068a9d.jpg?v=1791381680 Cefdinir CP Impurity D, 92.50% | 934986-48-8 Cefdinir CP Impurity D|C4X-12108|934986-48-8 https://www.jk-sci.com/products/j5312742 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/61b958b1e7eb1682dbf8f5807e10cc41.jpg?v=1791414249 Boc-D-Phe(2-trifluoromethyl)-OH, Purity by HPLC ≥ 99% | 346694-78-8 Boc-D-Phe(2-trifluoromethyl)-OH|12742|346694-78-8 https://www.jk-sci.com/products/j5312754 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0d3eb96bc4cea21820ba6c9f1ba4840d.jpg?v=1791414227 L-b-Homoproline hydrochloride, Purity ≥ 98% | 53912-85-9 L-b-Homoproline hydrochloride|12754|53912-85-9 https://www.jk-sci.com/products/j5312760 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/890909456ab16ea27ff3b9e008669335.jpg?v=1791414215 L-b-Homoglutamine hydrochloride, Purity ≥ 98% (NMR) | 336182-05-9 L-b-Homoglutamine hydrochloride|12760|336182-05-9 https://www.jk-sci.com/products/j5312767 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e36ca73ec11168a584ef7ff20f416b82.jpg?v=1791414200 Fmoc-O-tert-butyl-L-b-homoserine, Assay ≥ 95% | 203854-51-7 Fmoc-O-tert-butyl-L-b-homoserine|12767|203854-51-7 https://www.jk-sci.com/products/a01947089 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/aa5591215cffefde88ed08c0e9543650.jpg?v=1787976341 (2-Hydroxyphenyl)diphenylphosphine, 97% | 60254-10-6 (2-Hydroxyphenyl)diphenylphosphine, 97%|947089|60254-10-6 https://www.jk-sci.com/products/j5312787 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4410714c0ffce529164b294b6349e395.jpg?v=1791414161 Boc-L-b-homoglutamic acid 6-benzyl ester, Purity by HPLC ≥ 95% | 218943-30-7 Boc-L-b-homoglutamic acid 6-benzyl ester|12787|218943-30-7 https://www.jk-sci.com/products/s57c4x-121112 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/519376.png?v=1791381677 Paracetamol EP Impurity I, 99.00% | 118-93-4 Paracetamol EP Impurity I|C4X-121112|118-93-4 https://www.jk-sci.com/products/j5312800 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e9f724d82ae742513f5fe5719690a837.jpg?v=1791414144 Z-N-methyl-a-aminoisobutyric acid, Purity by HPLC ≥ 99% | 144332-60-5 Z-N-methyl-a-aminoisobutyric acid|12800|144332-60-5 https://www.jk-sci.com/products/s57c4x-112883 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_fbc3e0bf-b536-4bc9-8e64-e57eea40b98f.png?v=1791383609 N-Nitroso Sildenafil EP Impurity F, 94.20% N-Nitroso Sildenafil EP Impurity F|C4X-112883 https://www.jk-sci.com/products/s57c4x-113282 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/418666_d1dab236-bc7f-4584-afad-7ffcadf5fed5.png?v=1791383307 Atorvastatin Impurity 82, 97.30% | 125971-96-2 Atorvastatin Impurity 82|C4X-113282|125971-96-2 https://www.jk-sci.com/products/s57c4x-1138146 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a1219557a2225984d4a56df8dc433317.jpg?v=1791383171 Dapagliflozin Impurity 146, Purity: 96.5% | 1938090-31-3 Dapagliflozin Impurity 146|C4X-1138146|1938090-31-3 https://www.jk-sci.com/products/s57c4x-1144 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4db5e3cf6dcde4cfd1e50820cec48291.jpg?v=1791382970 Sitagliptin Phosphate, 98.60% | 654671-78-0 Sitagliptin Phosphate|C4X-1144|654671-78-0 https://www.jk-sci.com/products/s57c4x-114496 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d09a64adee95f378015eeec00afaa881_0503e86e-d815-4d90-980f-602cb835d3f7.jpg?v=1791382895 Sitagliptin Impurity 96, 98.50% | 1675201-14-5 Sitagliptin Impurity 96|C4X-114496|1675201-14-5 https://www.jk-sci.com/products/j5307949 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6fa0c24d23417b45da8d3390e7e6e1e9.jpg?v=1791415481 Caffeic acid phenethyl ester, Assay ≥ 98% | 104594-70-9 Caffeic acid phenethyl ester|07949|104594-70-9 https://www.jk-sci.com/products/a01947485 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eaac5ad8d3f8baea81f4847dac44de68.jpg?v=1788913322 7-Bromoquinolin-2(1H)-one, 97% | 99465-10-8 7-Bromoquinolin-2(1H)-one, 97%|947485|99465-10-8 https://www.jk-sci.com/products/j5309005 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/960669c99d31f305a357e495af5a5234.jpg?v=1791415293 Z-L-valine trifluoroethyl ester, Purity by HPLC ≥ 99% | 203640-52-2 Z-L-valine trifluoroethyl ester|09005|203640-52-2 https://www.jk-sci.com/products/j5307271 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/426864c1a8bc7175bafc6c91b9a4d03c.jpg?v=1791415809 Fmoc-N-methyl-L-phenylglycine, Purity ≥ 98% | 574739-36-9 Fmoc-N-methyl-L-phenylglycine|07271|574739-36-9 https://www.jk-sci.com/products/s57c4x-114937 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/481973_17af6f8b-bdca-4a47-9314-1620abea3767.png?v=1791382812 Cefoperazone, 96.40% | 62893-19-0 Cefoperazone|C4X-114937|62893-19-0 https://www.jk-sci.com/products/j5310918 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7299580f3f4bfd0d2b3a84c4e332ff46.jpg?v=1791415065 1,2-Dimyristoyl-sn-glycero-3-phosphoethanolamine | 998-07-2 1,2-Dimyristoyl-sn-glycero-3-phosphoethanolamine|10918|998-07-2 https://www.jk-sci.com/products/s57c4x-116013 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b12a54af0ecd0548482912bdf1f1b117.jpg?v=1791382706 Cholic Acid Impurity 13, 99.30% | 2304-92-9 Cholic Acid Impurity 13|C4X-116013|2304-92-9 https://www.jk-sci.com/products/j5310545 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d3dfa08e8eff31fe94f92789c68e2991.jpg?v=1791415144 1-Boc-piperidine-4-Fmoc-amino-4-carboxylic acid, Purity by HPLC ? 98% | 183673-66-7 1-Boc-piperidine-4-Fmoc-amino-4-carboxylic acid|10545|183673-66-7 https://www.jk-sci.com/products/s57c4x-116243 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3e5eb33758948dfa1922a2d96deab672_ea393279-d179-45de-b432-e66ec45e6be8.jpg?v=1791382633 Febuxostat Impurity 43, 97.00% | 161798-03-4 Febuxostat Impurity 43|C4X-116243|161798-03-4 https://www.jk-sci.com/products/a01947660 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9349837.png?v=1788913313 N-Ethylxanthyl phthalimide, 98% | 72731-86-3 N-Ethylxanthyl phthalimide, 98%|947660|72731-86-3 https://www.jk-sci.com/products/j5311290 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/417136014993b1dc887b8c4f6c482075.jpg?v=1791414943 Boc-1,5-diaminopentane·HCl, Assay by titration ≥ 98% | 77835-31-5 Boc-1,5-diaminopentane·HCl|11290|77835-31-5 https://www.jk-sci.com/products/j5311628 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/aecde09ccfab7b466767cce8f6c43a45.jpg?v=1791414873 Fmoc-D-glutamic acid a-9-fluorenylmethyl ester, Purity by HPLC ≥ 98% | 252049-17-5 Fmoc-D-glutamic acid a-9-fluorenylmethyl ester|11628|252049-17-5 https://www.jk-sci.com/products/s57c4x-116283 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_64498ae1-3de1-43e7-a5a9-f9b1413ab813.png?v=1791382600 Febuxostat Impurity 83, 99.40% Febuxostat Impurity 83|C4X-116283 https://www.jk-sci.com/products/s57c4x-116431 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_8641eda0-196c-466e-8a7f-a105e0651de4.png?v=1791382530 N-Nitroso Oxcarbazepine EP Impurity C, Purity: 97.3% N-Nitroso Oxcarbazepine EP Impurity C|C4X-116431 https://www.jk-sci.com/products/s57c4x-11635 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/43ba2e14709e02862c2dbf603f97f45d.jpg?v=1791382569 Ceftriaxone Sodium EP Impurity E, 92.40% | 58909-56-1 Ceftriaxone Sodium EP Impurity E|C4X-11635|58909-56-1 https://www.jk-sci.com/products/a01250721 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/250721.png?v=1790212924 16-Hexadecanolide, 97% | 109-29-5 16-Hexadecanolide, 97%|250721|109-29-5 https://www.jk-sci.com/products/s57c4x-116549 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/622223_9b47620a-c663-484c-9e13-e930a0787e12.png?v=1791382472 Dexamethasone Phosphate, 94.00% | 312-93-6 Dexamethasone Phosphate|C4X-116549|312-93-6 https://www.jk-sci.com/products/a01250893 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/250893.png?v=1787994668 Molybdenum boride, 99.5%, metal basis | 12006-98-3 Molybdenum boride, 99.5%, metal basis|250893|12006-98-3 https://www.jk-sci.com/products/j5311677 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e45f62e2df129a0fae1673ef801b994f.jpg?v=1791414820 L-Glutamic acid g-benzyl ester a-tert-butyl ester hydrochloride, Purity by HPLC ≥ 98% | 105590-97-4 L-Glutamic acid g-benzyl ester a-tert-butyl ester hydrochloride|11677|105590-97-4 https://www.jk-sci.com/products/s57c4x-11664 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/342604_f53e8c1f-5afd-4acc-badf-e4c9351ebb9e.png?v=1791382422 Sodium Valproate EP Impurity L, 93.90% | 97-61-0 Sodium Valproate EP Impurity L|C4X-11664|97-61-0 https://www.jk-sci.com/products/a01251478 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/251478.png?v=1790212916 N-(3-Aminopropyl)-N-methylaniline, 97% | 53485-07-7 N-(3-Aminopropyl)-N-methylaniline, 97%|251478|53485-07-7 https://www.jk-sci.com/products/s57c4x-116833 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/da99ce101f9500e7b54df7457fe36488.jpg?v=1791382359 Aprepitant Impurity 33, Purity: 92.0% | 219821-37-1 Aprepitant Impurity 33|C4X-116833|219821-37-1 https://www.jk-sci.com/products/s57c4x-116922 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1a10e800ca973f3130772d8946639860_b0e1cadc-aa66-4827-83fa-ee6c68532de9.jpg?v=1791382328 Rosuvastatin Impurity 22, 100.00% | 355806-00-7 Rosuvastatin Impurity 22|C4X-116922|355806-00-7 https://www.jk-sci.com/products/s57c4x-11731 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/447b9ce80fb714c71c82a23bf0fcd181.jpg?v=1791382297 Acarbose EP Impurity A, 93.30% | 1013621-79-8 Acarbose EP Impurity A|C4X-11731|1013621-79-8 https://www.jk-sci.com/products/j5311915 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dbed3fc7362905c6ef5969529e69c716.jpg?v=1791414624 Benzyl-L-methionine methyl ester hydrochloride, Assay by titration ≥ 99% || Purity by HPLC ≥ 99% | 402929-60-6 Benzyl-L-methionine methyl ester hydrochloride|11915|402929-60-6 https://www.jk-sci.com/products/j5312109 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/57e646f5496bd1bffda1eaa1abf3681c.jpg?v=1791414523 L-1,2,3,4-Tetrahydronorharman-3-carboxylic acid methyl ester hydrochloride, Purity by HPLC ≥ 98% | 83159-19-7 L-1,2,3,4-Tetrahydronorharman-3-carboxylic acid methyl ester hydrochloride|12109|83159-19-7 https://www.jk-sci.com/products/a01252446 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/252446_57e0a811-aad4-4031-8752-30057e5931bc.png?v=1788925492 5-Bromo-2-fluorobenzyl alcohol, 98% | 99725-13-0 5-Bromo-2-fluorobenzyl alcohol, 98%|252446|99725-13-0 https://www.jk-sci.com/products/j5311732 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/86ffce44a9eda50ab61633debd4fffd6.jpg?v=1791414766 Z-O-trityl-L-serine, Purity by HPLC ≥ 98% | 1330286-53-7 Z-O-trityl-L-serine|11732|1330286-53-7 https://www.jk-sci.com/products/j5311841 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/907fb0af38b262b4d4fa70c1de5ab502.jpg?v=1791414671 Boc-D-serine benzyl ester, Purity by HPLC ≥ 99% | 141527-78-8 Boc-D-serine benzyl ester|11841|141527-78-8 https://www.jk-sci.com/products/j5311967 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/44994a33e2684ac1e8c48af428fb60ea.jpg?v=1791414585 Na-Fmoc-Ne-trityl-L-lysine, Assay ≥ 99% || Chiral HPLC ≥ 99.8% (ee) || Purity by HPLC ≥ 99% | 111061-54-2 Na-Fmoc-Ne-trityl-L-lysine|11967|111061-54-2 https://www.jk-sci.com/products/a01253219 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/456061.png?v=1790212860 5-Nitro-6-methyluracil, 98% | 16632-21-6 5-Nitro-6-methyluracil, 98%|253219|16632-21-6 https://www.jk-sci.com/products/a01253000 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9c7d04c6d86e0779377149ec62ae653d.jpg?v=1788925470 Phenyl vinyl sulfone, 98% | 5535-48-8 Phenyl vinyl sulfone, 98%|253000|5535-48-8 https://www.jk-sci.com/products/s57c4x-1176155 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bc0816899cdece4dd64f6b06b0d17c8d_453c5c10-9837-4cfa-a3a2-40dfc83d6839.jpg?v=1791382249 Salbutamol Intermediate Impurity 55, 98.00% | 62932-94-9 Salbutamol Intermediate Impurity 55|C4X-1176155|62932-94-9 https://www.jk-sci.com/products/s57c4x-11757 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0dc3c9824e1278ec18345e0f2bcf9194.jpg?v=1791382270 Macitentan Impurity 7, 99.50% | 1433875-21-8 Macitentan Impurity 7|C4X-11757|1433875-21-8 https://www.jk-sci.com/products/s57c4x-117652 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_86c7a567-253d-4d49-bf44-f1f6ed6d4ef3.png?v=1791382221 Salbutamol EP Impurity K HCl, 94.60% Salbutamol EP Impurity K HCl|C4X-117652 https://www.jk-sci.com/products/s57c4x-117712 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fbb71639033a2ba2c5828dbe35289bf7.jpg?v=1791382208 Hydrochlorothiazide Impurity 12, 95.30% | 5250-72-6 Hydrochlorothiazide Impurity 12|C4X-117712|5250-72-6 https://www.jk-sci.com/products/j5312152 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1defaa0e0b5f6c8e27dc2567c4f4f17e.jpg?v=1791414500 Phthaloyl-b-alanine, Purity by HPLC ≥ 98% | 3339-73-9 Phthaloyl-b-alanine|12152|3339-73-9 https://www.jk-sci.com/products/j5312218 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8ec90412f5c0a02dffb6f820c32f30a1.jpg?v=1791414476 Z-L-aspartic acid b-tert-butyl ester a-methyl ester, Purity by HPLC ≥ 98% | 63327-57-1 Z-L-aspartic acid b-tert-butyl ester a-methyl ester|12218|63327-57-1 https://www.jk-sci.com/products/s57c4x-118113 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/718344925354c73319492c0dfc60f224.jpg?v=1791382155 Carbamazepine Impurity 13, 97.70% | 75272-34-3 Carbamazepine Impurity 13|C4X-118113|75272-34-3 https://www.jk-sci.com/products/s57c4x-11855 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/303042_f821f267-0c00-4f8f-803b-8aafdf449611.png?v=1791382115 Glutathione EP Impurity D, 75.20% | 636-58-8 Glutathione EP Impurity D|C4X-11855|636-58-8 https://www.jk-sci.com/products/j5312239 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0c07255fc00df3c0a67d53ce469d2da6.jpg?v=1791414464 Z-DL-norleucine, Purity by HPLC ≥ 98% | 15027-13-1 Z-DL-norleucine|12239|15027-13-1 https://www.jk-sci.com/products/a01254087 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/254087.png?v=1790212832 (S)-(+)-3-Aminopyrrolidine dihydrochloride, 98% | 116183-83-6 (S)-(+)-3-Aminopyrrolidine dihydrochloride, 98%|254087|116183-83-6 https://www.jk-sci.com/products/s57c4x-118316 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/82a8115b042e681f1d20ed4d57f68267.jpg?v=1791382138 Terbutaline EP Impurity B Hemisulphate, 92.40% | 153657-83-1 Terbutaline EP Impurity B Hemisulphate|C4X-118316|153657-83-1 https://www.jk-sci.com/products/a01255333 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/255333.png?v=1790212807 2-Amino-3-methoxybenzoic acid, 97% | 3177-80-8 2-Amino-3-methoxybenzoic acid, 97%|255333|3177-80-8 https://www.jk-sci.com/products/j5312276 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/17e7c8e38fe06070beff8cb5b5d727ee.jpg?v=1791414446 Z-glycine methyl ester, Purity by HPLC ≥ 97% | 1212-53-9 Z-glycine methyl ester|12276|1212-53-9 https://www.jk-sci.com/products/s57c4x-11782 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e600a7346302aaddf832382c90f6bd96_d15f5768-dbbb-4f7c-9aa4-0f88eb18f95a.jpg?v=1791382190 Olanzapine Ep Impurity B, 99.80% | 221176-49-4 Olanzapine Ep Impurity B|C4X-11782|221176-49-4 https://www.jk-sci.com/products/s57c4x-11882 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/294033_559f0707-6aab-478d-8688-a7ceb549f236.png?v=1791382070 Chlorphenamine EP Impurity B, 99.50% | 1202-34-2 Chlorphenamine EP Impurity B|C4X-11882|1202-34-2 https://www.jk-sci.com/products/s57c4x-118737 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_f183984b-66bf-497a-9c80-ecc998b4fdf4.png?v=1791382091 Tamsulosin EP Impurity H HCl, 98.00% Tamsulosin EP Impurity H HCl|C4X-118737 https://www.jk-sci.com/products/j5312311 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a546ec682ccbaee25389c9f3fe109061.jpg?v=1791414434 Z-L-phenylalanine 4-nitrobenzyl ester, Purity by HPLC ≥ 98% Z-L-phenylalanine 4-nitrobenzyl ester|12311 https://www.jk-sci.com/products/j5312346 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ad410f09b62dffbd12a38254237a2236.jpg?v=1791414427 Z-3,5-diiodo-L-tyrosine ethyl ester, Purity by HPLC ≥ 98% | 102202-92-6 Z-3,5-diiodo-L-tyrosine ethyl ester|12346|102202-92-6 https://www.jk-sci.com/products/a01254378 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/312785.png?v=1788925412 2-Methoxyphenylboronic acid, 98% | 5720-06-9 2-Methoxyphenylboronic acid, 98%|254378|5720-06-9 https://www.jk-sci.com/products/s57c4x-119118 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_cbad3452-651c-4c7c-b6de-1d880293942b.png?v=1791382022 Lapatinib Impurity 18, 98.00% Lapatinib Impurity 18|C4X-119118 https://www.jk-sci.com/products/s57c4x-119514 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_7063ab46-10fa-4732-9918-a5b0574e66cd.png?v=1791381986 Tocopherol Impurity 14, 98.70% Tocopherol Impurity 14|C4X-119514 https://www.jk-sci.com/products/j5312746 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8820e92ef5ab017048c96fa125323558.jpg?v=1791414244 Z-L-homoserine lactone, Purity ≥ 99% | 35677-89-5 Z-L-homoserine lactone|12746|35677-89-5 https://www.jk-sci.com/products/j5312387 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ee055a5a56df4568183bd97f90a834d8.jpg?v=1791414394 DL-Methioninol, Purity by HPLC ≥ 99% | 16720-80-2 DL-Methioninol|12387|16720-80-2 https://www.jk-sci.com/products/j5312474 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bb385d7a324d8e76249fc435e6b7d89c.jpg?v=1791414330 Fmoc-L-alanine Rink amide AM resin, Mesh Size 100 - 200 mesh || Substitution (meq/g) 0.3 - 0.8 meq/g Fmoc-L-alanine Rink amide AM resin|12474 https://www.jk-sci.com/products/s57c4x-119339 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_973d624a-8de0-423a-bebf-e5f23e76ea07.png?v=1791382005 Cefepime Impurity 39, 90.20% Cefepime Impurity 39|C4X-119339 https://www.jk-sci.com/products/s57c4x-11948 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/457913_c954ffaa-187d-45ee-997a-67e4941f9c05.png?v=1791381992 Lamivudine EP Impurity E, 91.60% | 71-30-7 Lamivudine EP Impurity E|C4X-11948|71-30-7 https://www.jk-sci.com/products/s57c4x-11886 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1674b4456325d66eea7d919f6d8ee21b.jpg?v=1791382052 Chlorphenamine EP Impurity A, 98.70% | 1246816-57-8 Chlorphenamine EP Impurity A|C4X-11886|1246816-57-8 https://www.jk-sci.com/products/s57c4x-119710 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d86782457306f1d3ce074a771d99ce10.jpg?v=1791381974 Sodium Fusidate EP Impurity J, 95.60% | 13011-12-6 Sodium Fusidate EP Impurity J|C4X-119710|13011-12-6 https://www.jk-sci.com/products/j5312762 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1156a9fa59389c3ae1165d463b05bdd1.jpg?v=1791414205 L-b-Homoalanine hydrochloride, Purity ≥ 98% (NMR) | 58610-41-6 L-b-Homoalanine hydrochloride|12762|58610-41-6 https://www.jk-sci.com/products/j5312605 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a6950db10d15217625e354696d8d22eb.jpg?v=1791414304 Fmoc-L-cysteine amide, Chiral HPLC ≥ 99.5% (ee) || Purity by HPLC ≥ 98% | 623177-62-8 Fmoc-L-cysteine amide|12605|623177-62-8 https://www.jk-sci.com/products/s57c4x-119718 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7ce4e886fe8e68395594a02f144344ef.jpg?v=1791381967 Sodium Fusidate Impurity 18, 96.30% | 16391-75-6 Sodium Fusidate Impurity 18|C4X-119718|16391-75-6 https://www.jk-sci.com/products/s57c4x-11974 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_727a140f-bf08-401a-b49b-dc0d1c0f6fcb.png?v=1791381962 Sodium Fusidate EP Impurity D, 95.40% Sodium Fusidate EP Impurity D|C4X-11974 https://www.jk-sci.com/products/s57c4x-1198100 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/437980_fb2dbe65-1f1f-4b85-bdb6-b9551d364ba2.png?v=1791381939 Eltrombopag Impurity 100, 94.40% | 15969-09-2 Eltrombopag Impurity 100|C4X-1198100|15969-09-2 https://www.jk-sci.com/products/s57c4x-11979 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/14a2cf2035eca8d6fc97cbad0de503ed.jpg?v=1791381949 Sodium Fusidate EP Impurity I, 99.30% | 5951-83-7 Sodium Fusidate EP Impurity I|C4X-11979|5951-83-7 https://www.jk-sci.com/products/j5318897 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/48f3f97cc5ebf9abb57cb3c01f8b5978.jpg?v=1791409666 3-Cyanomethyl-pyrrolidine-1-carboxylic acid tert-butyl ester, Purity ≥ 95% (NMR) | 142253-46-1 3-Cyanomethyl-pyrrolidine-1-carboxylic acid tert-butyl ester|18897|142253-46-1 https://www.jk-sci.com/products/j5312797 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/01deb157496c1c5eb6cf433f37575358.jpg?v=1791414147 Boc-3-iodo-D-alanine methyl ester, Chiral HPLC ≥ 99.5% (ee) || Purity by HPLC ≥ 99% | 170848-34-7 Boc-3-iodo-D-alanine methyl ester|12797|170848-34-7 https://www.jk-sci.com/products/s57c4x-119837 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/325011_a75c1e7e-cab5-4797-bd5f-9b7d210108e1.png?v=1791381929 Eltrombopag Impurity 37, 98.20% | 7693-52-9 Eltrombopag Impurity 37|C4X-119837|7693-52-9 https://www.jk-sci.com/products/j5312843 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/09b2af0db21f4bd44d3ec6528ed1fcf3.jpg?v=1791414116 Fmoc-2-methyl-L-phenylalanine, Purity by HPLC ≥ 98% | 211637-75-1 Fmoc-2-methyl-L-phenylalanine|12843|211637-75-1 https://www.jk-sci.com/products/j5312845 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3ba3bc01596bf5d31143bdc86878c986.jpg?v=1791414110 Fmoc-3-methyl-D-phenylalanine, Assay ≥ 98% | 352351-64-5 Fmoc-3-methyl-D-phenylalanine|12845|352351-64-5 https://www.jk-sci.com/products/s57c4x-119866 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_8beda8a3-3068-4d88-8bbb-c8943e4c04ab.png?v=1791381921 Eltrombopag Impurity 66, 94.40% Eltrombopag Impurity 66|C4X-119866 https://www.jk-sci.com/products/s57c4x-11988 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/68cd6e5f00daeed358825b3f0b47f98e.jpg?v=1791381917 Eltrombopag Impurity 8, 99.00% | 376592-93-7 Eltrombopag Impurity 8|C4X-11988|376592-93-7 https://www.jk-sci.com/products/j5312856 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/826b6b465feb79d03d84f84cd7083170.jpg?v=1791414088 Boc-3-methyl-L-phenylalanine, Purity by HPLC ≥ 99.0% | 114873-06-2 Boc-3-methyl-L-phenylalanine|12856|114873-06-2 https://www.jk-sci.com/products/j5312859 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f8e20f51b7bc97d93b00b1f462d12bf0.jpg?v=1791414083 Boc-glycine tert-butyl ester, Purity by HPLC ≥ 98% | 111652-20-1 Boc-glycine tert-butyl ester|12859|111652-20-1 https://www.jk-sci.com/products/s57c4x-119915 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/217521_42c1c96b-d2cc-48fa-ba0c-7efa83af76fa.png?v=1791381907 Simvastatin EP Impurity A(Ammonium Salt), 91.10% | 139893-43-9 Simvastatin EP Impurity A(Ammonium Salt)|C4X-119915|139893-43-9 https://www.jk-sci.com/products/s57c4x-11993 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/42e02d760094d73a41f93a28b4c398d6.jpg?v=1791381902 Simvastatin EP Impurity C, 94.00% | 210980-68-0 Simvastatin EP Impurity C|C4X-11993|210980-68-0 https://www.jk-sci.com/products/s57c4x-11997 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0aa8813d13e8e9f94cfd7ec594863984.jpg?v=1791381891 Simvastatin EP Impurity G, 99.40% | 1449248-72-9 Simvastatin EP Impurity G|C4X-11997|1449248-72-9 https://www.jk-sci.com/products/s57c4x-120126 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/32949ea83e8c138d408779c9f0990d0e.jpg?v=1791381884 Cefotaxime S-Oxide, 92.60% | 97466-27-8 Cefotaxime S-Oxide|C4X-120126|97466-27-8 https://www.jk-sci.com/products/s57c4x-12016 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/69a448641b32329dbeef515d8a17ffae.jpg?v=1791381874 Cefotaxime EP Impurity F, 91.10% | 175032-97-0 Cefotaxime EP Impurity F|C4X-12016|175032-97-0 https://www.jk-sci.com/products/j5312863 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/45b75871245d8dad3f9c2bfa42635d44.jpg?v=1791414073 Boc-S-tert-butylthio-L-cysteine | 30044-61-2 Boc-S-tert-butylthio-L-cysteine|12863|30044-61-2 https://www.jk-sci.com/products/j5312911 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7481e61e5c1037a143209b02033cae6f.jpg?v=1791414040 N-(tert-Butoxycarbonyloxy)succinimide, Purity by HPLC ? 99% | 13139-12-3 N-(tert-Butoxycarbonyloxy)succinimide|12911|13139-12-3 https://www.jk-sci.com/products/j5312888 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/92a0323dfb794aa1d95c7c7962dfd313.jpg?v=1791414060 Boc-L-b-phenylalanine, Purity by HPLC ≥ 98% | 161024-80-2 Boc-L-b-phenylalanine|12888|161024-80-2 https://www.jk-sci.com/products/s57c4x-12023 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/df0a45438e775c1d8e1649611c8f1ca8.jpg?v=1791381862 Melitracen Impurity 3, 99.50% | 5447-86-9 Melitracen Impurity 3|C4X-12023|5447-86-9 https://www.jk-sci.com/products/j5312958 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3c27f9b2a549545d03d59056b3b96d76.jpg?v=1791414008 6-Nitroveratryl chloroformate, Purity ≥ 97% | 42855-00-5 6-Nitroveratryl chloroformate|12958|42855-00-5 https://www.jk-sci.com/products/j5312946 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/185d486952a165a33ea9a89974690614.jpg?v=1791414018 Boc-b-alanine 4-nitrophenyl ester, Purity by HPLC ≥ 97% | 17547-09-0 Boc-b-alanine 4-nitrophenyl ester|12946|17547-09-0 https://www.jk-sci.com/products/j5312962 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8f6df3524999c3dcf931b9b8fa3a580b.jpg?v=1791414002 5-(Boc-amino)-1-pentanol, Assay ≥ 97% | 75178-90-4 5-(Boc-amino)-1-pentanol|12962|75178-90-4 https://www.jk-sci.com/products/a01255351 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/489245.png?v=1790212804 4-Amino-3-nitropyridine, 98% | 1681-37-4 4-Amino-3-nitropyridine, 98%|255351|1681-37-4 https://www.jk-sci.com/products/s57c4x-120322 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/026abf3bea7342eeb07edf155a97f8de.jpg?v=1791381849 Bupropion Impurity 22, 96.20% | 2133460-43-0 Bupropion Impurity 22|C4X-120322|2133460-43-0 https://www.jk-sci.com/products/s57c4x-120347 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0ccddd4cba0aabca20f8f0e32d6d84b0.jpg?v=1791381839 Hydroxy Bupropion-d6, Purity>95% | 1216893-18-3 Hydroxy Bupropion-d6|C4X-120347|1216893-18-3 https://www.jk-sci.com/products/j5312975 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fe84f5782cef940bbf37735d21387aa8.jpg?v=1791413989 4-Bromo-1,2-dimethylbenzene, Purity by GC ≥ 98% | 583-71-1 4-Bromo-1,2-dimethylbenzene|12975|583-71-1 https://www.jk-sci.com/products/s57c4x-12041 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/34090f518085e6cfc50f96aa3082b708.jpg?v=1791381826 Cefotiam Impurity 1, 90.40% | 775233-43-7 Cefotiam Impurity 1|C4X-12041|775233-43-7 https://www.jk-sci.com/products/j5312988 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ac83b8dc0f6014b827ac2bc2c2c2cea5.jpg?v=1791413979 3,4-Dihydro-2H-pyran, Assay ≥ 98% | 110-87-2 3,4-Dihydro-2H-pyran|12988|110-87-2 https://www.jk-sci.com/products/s57c4x-120537 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_dadde4d9-3863-4e9a-bfcd-18d45b7cb9ca.png?v=1791381816 Tazobactam Impurity 37, Purity: 97.3% Tazobactam Impurity 37|C4X-120537 https://www.jk-sci.com/products/s57c4x-120811 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c7cdcea377723fe68845649ed997dfc5.jpg?v=1791381810 Posaconazole Impurity 11, 94.90% | 159811-30-0 Posaconazole Impurity 11|C4X-120811|159811-30-0 https://www.jk-sci.com/products/j5314013 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b396a2f9362e41871aaa53417ab4c8bb.jpg?v=1791413946 O-Benzyl-D-threonine, Assay ≥ 99% | 86062-17-1 O-Benzyl-D-threonine|14013|86062-17-1 https://www.jk-sci.com/products/s57c4x-1208199 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_5bd85bfb-9429-46a7-a30b-afcec6622c2c.png?v=1791381772 Posaconazole Impurity 99, 99.00% Posaconazole Impurity 99|C4X-1208199 https://www.jk-sci.com/products/s57c4x-120813 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c2e829e999a6875856591414517959ff.jpg?v=1791381794 Posaconazole Impurity 13(R,R,R,R), 99.40% | 170985-61-2 Posaconazole Impurity 13(R,R,R,R)|C4X-120813|170985-61-2 https://www.jk-sci.com/products/s57c4x-120817 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e11e35e26fcfe279aae886ad336a23af.jpg?v=1791381788 Posaconazole Impurity 17(R,R,R,S), 98.20% | 171228-51-6 Posaconazole Impurity 17(R,R,R,S)|C4X-120817|171228-51-6 https://www.jk-sci.com/products/s57c4x-1208181 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ee10ab11-ca92-4f56-8ac1-1ba1d7acf35d.png?v=1791381780 Posaconazole Impurity 81, Purity: 99.6% Posaconazole Impurity 81|C4X-1208181 https://www.jk-sci.com/products/s57c4x-1208261 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/55c9f1b69309c32a5d9faa3d3b440f47.jpg?v=1791381760 Posaconazole Impurity 261, 91.80% | 2376724-98-8 Posaconazole Impurity 261|C4X-1208261|2376724-98-8 https://www.jk-sci.com/products/s57c4x-121013 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3d4f5d03c9eb6aff9cc448a932e6dc83.jpg?v=1791381709 Cefdinir CP Impurity I&J&K&L, 92.90% | 178422-42-9 Cefdinir CP Impurity I&J&K&L|C4X-121013|178422-42-9 https://www.jk-sci.com/products/s57c4x-120852 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/93f3ca175c2c568d322d833b82294b9a.jpg?v=1791381735 Posaconazole Impurity 52, 93.80% | 161532-56-5 Posaconazole Impurity 52|C4X-120852|161532-56-5 https://www.jk-sci.com/products/s57c4x-120845 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4f10c38a1b6d77c11eca8406a6fe52fb.jpg?v=1791381748 Posaconazole Impurity 45, 96.90% | 1388148-30-8 Posaconazole Impurity 45|C4X-120845|1388148-30-8 https://www.jk-sci.com/products/j5314088 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f7e443100d4e277694eed71d9f0036ed.jpg?v=1791413895 Phg-Gly-OH, Purity ≥ 98% | 134624-91-2 Phg-Gly-OH|14088|134624-91-2 https://www.jk-sci.com/products/s57c4x-120840 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/18c50e250aee750791a1af2d98bc2839.jpg?v=1791381753 Posaconazole Impurity 40, Purity: 97.2% | 1370190-94-5 Posaconazole Impurity 40|C4X-120840|1370190-94-5 https://www.jk-sci.com/products/s57c4x-120863 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c148d56e-e94e-4f74-ac95-07f8f44bfe86.png?v=1791381724 Posaconazole Impurity 63, Purity: 99.0% Posaconazole Impurity 63|C4X-120863 https://www.jk-sci.com/products/j5314070 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6b703986e4c93b26f3c32af937643a53.jpg?v=1791413904 Boc-4-nitro-L-phenylalanine dicyclohexylammonium salt, Purity by HPLC ≥ 99% | 102185-42-2 Boc-4-nitro-L-phenylalanine dicyclohexylammonium salt|14070|102185-42-2 https://www.jk-sci.com/products/j5314044 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/59767792e076d1040ae3400a2f8574cc.jpg?v=1791413919 Fmoc-L-Phe(2-trifluoromethyl)-OH, Assay ? 99% | 352523-16-1 Fmoc-L-Phe(2-trifluoromethyl)-OH|14044|352523-16-1 https://www.jk-sci.com/products/s57c4x-120883 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_18656457-077a-4f40-911e-1813bd71b755.png?v=1791381717 Posaconazole Impurity 83, 96.70% Posaconazole Impurity 83|C4X-120883 https://www.jk-sci.com/products/s57c4x-121029 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_a2ccb2dd-ae99-45d7-8975-6d126cf9964e.png?v=1791381699 Cefdinir Impurity 29, 67.50% Cefdinir Impurity 29|C4X-121029 https://www.jk-sci.com/products/j5314099 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5b69ed4e95aaadb8417be5ac4c0166a0.jpg?v=1791413880 Boc-D-phenylalanine methyl ester, Purity by HPLC ≥ 98% | 77119-84-7 Boc-D-phenylalanine methyl ester|14099|77119-84-7 https://www.jk-sci.com/products/s57c4x-121045 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ab55f6f6f3fbc48cb62c4b8df4c7eb1d.jpg?v=1791381694 Cefdinir USP Impurity A, 92.00% | 178949-03-6 Cefdinir USP Impurity A|C4X-121045|178949-03-6 https://www.jk-sci.com/products/j5314123 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e7385a1dbf1804dcb000674322069226.jpg?v=1791413865 Boc-(2R,3R)-3-amino-2-hydroxy-4-phenylbutyric acid, Purity ≥ 98% | 77171-41-6 Boc-(2R,3R)-3-amino-2-hydroxy-4-phenylbutyric acid|14123|77171-41-6 https://www.jk-sci.com/products/s57c4x-12106 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7e8ec3a44cac357d2edbc974cbf8b794.jpg?v=1791381683 Cefdinir Impurity 6, 83.90% | 79350-14-4 Cefdinir Impurity 6|C4X-12106|79350-14-4 https://www.jk-sci.com/products/j5314227 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8bba797733cb77f9f90f6684b764ce59.jpg?v=1791413855 Piperazine trityl resin, Mesh Size 200-400 mesh || Substitution (meq/g) 0.3-1.6 meq/g Piperazine trityl resin|14227 https://www.jk-sci.com/products/j5314252 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7aacb786969032117468831e6228abc7.jpg?v=1791413850 D-Ala-Pro-OH·HCl, Purity ≥ 98% | 61430-12-4 D-Ala-Pro-OH·HCl|14252|61430-12-4 https://www.jk-sci.com/products/j5314278 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/20d59d90cb427eba26fef7fea35c11a4.jpg?v=1791413825 Allyl bromide, Purity by GC ≥ 99% | 106-95-6 Allyl bromide|14278|106-95-6 https://www.jk-sci.com/products/s57c4x-121115 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/505567.png?v=1791381674 Paracetamol EP Impurity N, 99.50% | 3070-86-8 Paracetamol EP Impurity N|C4X-121115|3070-86-8 https://www.jk-sci.com/products/s57c4x-121125 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/073c1c4dd3ea9f3982ef7b4212c512cd.jpg?v=1791381664 Acetaminophen Impurity 25, 94.20% | 98966-14-4 Acetaminophen Impurity 25|C4X-121125|98966-14-4 https://www.jk-sci.com/products/s57c4x-12112 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/145666.png?v=1791381670 Acetaminophen EP Impurity H, 99.60% | 2623-33-8 Acetaminophen EP Impurity H|C4X-12112|2623-33-8 https://www.jk-sci.com/products/s57c4x-121128 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b7b09015d7132b12e23c9de2f1e7a17f.jpg?v=1791381664 Paracetamol EP Impurity O, 91.90% | 2575516-61-7 Paracetamol EP Impurity O|C4X-121128|2575516-61-7 https://www.jk-sci.com/products/s57c4x-121132 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/347117.png?v=1791381658 Acetaminophen Impurity 32, 98.50% | 874-60-2 Acetaminophen Impurity 32|C4X-121132|874-60-2 https://www.jk-sci.com/products/j5306681 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bccae60ef7dced0869e021e0fafd192f.jpg?v=1791416305 L-Phenylalanine hydrazide, Assay by titration ≥ 98% (HCl04) | 52386-52-4 L-Phenylalanine hydrazide|06681|52386-52-4 https://www.jk-sci.com/products/j5310723 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fa12d7a63ed2aacc6b6b71516306761a.jpg?v=1791415091 Anisindione, Assay ≥ 99% (elemental analysis Cth : 76.18%) | 117-37-3 Anisindione|10723|117-37-3 https://www.jk-sci.com/products/j5308466 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bf3a3e98d3e1fb6a5a4eddec0c315cd9.jpg?v=1791415395 DL-a-tert-Butylglycine, Assay ≥ 99% | 33105-81-6 DL-a-tert-Butylglycine|08466|33105-81-6 https://www.jk-sci.com/products/j5311588 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4e980a090434d3c89bd5d429e2b560ee.jpg?v=1791414898 Na-Allyloxycarbonyl-Nd-Boc-L-ornithine dicyclohexyl ammonium salt, Assay by titration ≥ 98% || Purity by HPLC ≥ 99% | 171820-74-9 Na-Allyloxycarbonyl-Nd-Boc-L-ornithine dicyclohexyl ammonium salt|11588|171820-74-9 https://www.jk-sci.com/products/j5311710 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/972384349b5ec32e00dd1eafb1534157.jpg?v=1791414786 Boc-1,3-diaminopropane·HCl, Assay by titration 99-100.5% | 127346-48-9 Boc-1,3-diaminopropane·HCl|11710|127346-48-9 https://www.jk-sci.com/products/s57c4x-12116 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/226525_c309583c-980d-4d55-a96d-8ea2dcdc6608.png?v=1791381653 Paracetamol EP Impurity E, 99.30% | 99-93-4 Paracetamol EP Impurity E|C4X-12116|99-93-4 https://www.jk-sci.com/products/a01255539 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/288143.png?v=1790212796 3-Hydroxy-4-methoxybenzaldehyde, 99% | 621-59-0 3-Hydroxy-4-methoxybenzaldehyde, 99%|255539|621-59-0 https://www.jk-sci.com/products/j5311889 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6406f0d9a361cc1a411902ae96c72bdb.jpg?v=1791414645 Boc-Nin-formyl-L-1,2,3,4-tetrahydronorharmane-3-carboxylic acid, Assay by titration ≥ 85% || Purity by HPLC ≥ 99% | 327603-46-3 Boc-Nin-formyl-L-1,2,3,4-tetrahydronorharmane-3-carboxylic acid|11889|327603-46-3 https://www.jk-sci.com/products/s57c4x-1212 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/289085_e6abcc89-12ce-420a-82bd-d78b670eb1bc.png?v=1791381650 Ceftazidime Pentahydrate, 95.30% | 78439-06-2 Ceftazidime Pentahydrate|C4X-1212|78439-06-2 https://www.jk-sci.com/products/s57c4x-121222 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_f8bc9867-82c6-4754-a79f-bd566b5352a4.png?v=1791381644 Ceftazidime Impurity 22, 90.10% Ceftazidime Impurity 22|C4X-121222 https://www.jk-sci.com/products/j5312045 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ca3abade599807f5e49da98dc55fd586.jpg?v=1791414552 L-Glutamic acid g-methyl a-benzyl ester 4-toluenesulfonate salt | 32326-55-9 L-Glutamic acid g-methyl a-benzyl ester 4-toluenesulfonate salt|12045|32326-55-9 https://www.jk-sci.com/products/j5312194 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8a80c873c803efd0f2ae119135b50efd.jpg?v=1791414482 Z-DL-4-amino-3-hydroxybutyric acid, Purity by HPLC ≥ 97% | 118125-41-0 Z-DL-4-amino-3-hydroxybutyric acid|12194|118125-41-0 https://www.jk-sci.com/products/j5312243 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6622a03d1c29480ade8013944581059d.jpg?v=1791414457 Z-DL-valine, Purity by HPLC ≥ 98% | 3588-63-4 Z-DL-valine|12243|3588-63-4 https://www.jk-sci.com/products/s57c4x-121234 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3c371b1697b7be6f8ca1f207b9df0ff7.jpg?v=1791381640 Ceftazidime Impurity 34, 92.50% | 72820-16-7 Ceftazidime Impurity 34|C4X-121234|72820-16-7 https://www.jk-sci.com/products/s57c4x-12126 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/370699_581a6e0a-0cd9-4760-bcd6-9ffa5d3fda7e.png?v=1791381634 Ceftazidime EP Impurity F(HCl), 98.70% | 628-13-7 Ceftazidime EP Impurity F(HCl)|C4X-12126|628-13-7 https://www.jk-sci.com/products/a01255723 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/255723_ad93245e-658b-4353-b758-9c76f4a2e2ce.png?v=1788925376 Boc-alanine, 98% | 3744-87-4 Boc-alanine, 98%|255723|3744-87-4 https://www.jk-sci.com/products/j5312325 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/121ab77753b1faa83b3a1cae6e34dde9.jpg?v=1791414435 Z-L-serine amide, Purity by HPLC ≥ 98% | 70897-15-3 Z-L-serine amide|12325|70897-15-3 https://www.jk-sci.com/products/j5312415 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ed43e5b14d051a818d6eba0e1d2249f2.jpg?v=1791414359 DL-Glutamic acid g-methyl ester, Purity by HPLC ≥ 98% | 14487-45-7 DL-Glutamic acid g-methyl ester|12415|14487-45-7 https://www.jk-sci.com/products/j5312647 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1c890da7a4c6bb12d12c34c18cb4d9cb.jpg?v=1791414273 Na-Trityl-Nb-Fmoc-L-2,3-diaminopropionic acid, Assay by titration ≥ 91% || Purity by HPLC ≥ 99% | 1263046-25-8 Na-Trityl-Nb-Fmoc-L-2,3-diaminopropionic acid|12647|1263046-25-8 https://www.jk-sci.com/products/s57c4x-12131 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ca91933b5c6d17263aa96510e8809acf.jpg?v=1791381628 Roxatidine Impurity 1, Purity: 97.9% | 97900-88-4 Roxatidine Impurity 1|C4X-12131|97900-88-4 https://www.jk-sci.com/products/j5312773 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/44519d7917c2fe6231933d742a000663.jpg?v=1791414187 Fmoc-L-b-homoglutamic acid 6-tert-butyl ester, Purity ≥ 95% | 203854-49-3 Fmoc-L-b-homoglutamic acid 6-tert-butyl ester|12773|203854-49-3 https://www.jk-sci.com/products/s57c4x-12134 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/397554.png?v=1791381621 Roxatidine Impurity 4, 94.30% | 73279-04-6 Roxatidine Impurity 4|C4X-12134|73279-04-6 https://www.jk-sci.com/products/s57c4x-121321 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d5a727371be3ea53067ef257072374fa.jpg?v=1791381624 Roxatidine Impurity 21, 97.10% | 108441-34-5 Roxatidine Impurity 21|C4X-121321|108441-34-5 https://www.jk-sci.com/products/s57c4x-121344 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/489413_906a3968-ab0e-4338-81a4-20c3b6783343.png?v=1791381614 Roxatidine Impurity 44, 97.70% | 6276-54-6 Roxatidine Impurity 44|C4X-121344|6276-54-6 https://www.jk-sci.com/products/j5312844 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a69e23138fecc614ee566fa66fbbd6f6.jpg?v=1791414116 Fmoc-2-cyano-L-phenylalanine, Purity ≥ 99% | 401933-16-2 Fmoc-2-cyano-L-phenylalanine|12844|401933-16-2 https://www.jk-sci.com/products/s57c4x-121355 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/161339.png?v=1791381610 Roxatidine Impurity 55, 86.70% | 100841-00-7 Roxatidine Impurity 55|C4X-121355|100841-00-7 https://www.jk-sci.com/products/j5312857 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/579c9dd946243b81304bb99b74759ad2.jpg?v=1791414083 Boc-2-methyl-L-phenylalanine, Purity ≥ 98% | 114873-05-1 Boc-2-methyl-L-phenylalanine|12857|114873-05-1 https://www.jk-sci.com/products/j5312879 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8ff5ca4f7df13205f4f57a78e9ffc5c0.jpg?v=1791414069 O,O'-Bis(2-aminoethyl)polyethylene glycol 10,000, Purity by HPLC ≥ 99% | 24991-53-5 O,O'-Bis(2-aminoethyl)polyethylene glycol 10,000|12879|24991-53-5 https://www.jk-sci.com/products/s57c4x-121357 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/270573_5377db4f-9133-4819-91f9-1bd95a42db3c.png?v=1791381604 Roxatidine Impurity 57, 91.10% | 615-18-9 Roxatidine Impurity 57|C4X-121357|615-18-9 https://www.jk-sci.com/products/s57c4x-12151 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/21fd7d0fd9c7c6a2f2164bae8d051a94.jpg?v=1791381599 Cefradine EP Impurity G(Cefalexin EP Impurity E/Cefadroxil EP Impurity H), 92.30% | 146794-70-9 Cefradine EP Impurity G(Cefalexin EP Impurity E/Cefadroxil EP Impurity H)|C4X-12151|146794-70-9 https://www.jk-sci.com/products/s57c4x-12137 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/315323.png?v=1791381599 Roxatidine Hemioxalate, 98.50% | 110925-92-3 Roxatidine Hemioxalate|C4X-12137|110925-92-3 https://www.jk-sci.com/products/j5312921 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6f18bc9d86f32fcc27d9c567798980ee.jpg?v=1791414034 Methanesulfonic acid, Assay by titration ≥ 99% | 75-75-2 Methanesulfonic acid|12921|75-75-2 https://www.jk-sci.com/products/a01255779 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/133274.png?v=1790212785 Ethyl 5-chloro-2-indolecarboxylate, 97% | 4792-67-0 Ethyl 5-chloro-2-indolecarboxylate, 97%|255779|4792-67-0 https://www.jk-sci.com/products/s57c4x-12153 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8b688b92de513a63f3b88743d1605ce0.jpg?v=1791381593 Cefradine EP Impurity E, 91.50% | 215172-75-1 Cefradine EP Impurity E|C4X-12153|215172-75-1 https://www.jk-sci.com/products/s57c4x-12161 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/368394.png?v=1791381587 Mifepristone Impurity 1, Purity: 95.6% | 104004-96-8 Mifepristone Impurity 1|C4X-12161|104004-96-8 https://www.jk-sci.com/products/j5312961 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f0c2e22da4ddc75f4f1ae5bb382406d1.jpg?v=1791414003 5-(Fmoc-amino)-1-pentanol, Purity ≥ 95% (NMR) | 209115-33-3 5-(Fmoc-amino)-1-pentanol|12961|209115-33-3 https://www.jk-sci.com/products/s57c4x-12201 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/599117.png?v=1791381581 Metformin EP Impurity A, 99.90% | 461-58-5 Metformin EP Impurity A|C4X-12201|461-58-5 https://www.jk-sci.com/products/j5312984 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2dcd535bf747f87bfb3c9a0528f2d8d6.jpg?v=1791413983 4-(Boc-amino)-1-butanol, Purity by HPLC ≥ 98% | 75178-87-9 4-(Boc-amino)-1-butanol|12984|75178-87-9 https://www.jk-sci.com/products/j5314029 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d7b1d381fd2caab6351b4801ae2ce896.jpg?v=1791413933 Piperazine-2-carboxylic acid, Assay by titration ≥ 99% (On dried basis) | 133525-05-0 Piperazine-2-carboxylic acid|14029|133525-05-0 https://www.jk-sci.com/products/j5314076 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9bedc1f1739ef5936e29b38e04a79307.jpg?v=1791413899 Boc-DL-tyrosine, Purity by HPLC ≥ 99% | 142847-18-5 Boc-DL-tyrosine|14076|142847-18-5 https://www.jk-sci.com/products/s57c4x-12202 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/384386.png?v=1791381583 Metformin EP Impurity B, 98.40% | 4405-08-7 Metformin EP Impurity B|C4X-12202|4405-08-7 https://www.jk-sci.com/products/s57c4x-12203 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/425386_f09d9e19-2a34-46e3-9105-ba882bffdf19.png?v=1791381576 Metformin EP Impurity C, 98.40% | 1985-46-2 Metformin EP Impurity C|C4X-12203|1985-46-2 https://www.jk-sci.com/products/j5314119 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3b18d703b1931d21d70eef25a938f4b9.jpg?v=1791413866 (R)-1-Boc-2-tert-butyl-3-methyl-4-imidazolidinone, Assay by titration ≥ 99% | 119838-44-7 (R)-1-Boc-2-tert-butyl-3-methyl-4-imidazolidinone|14119|119838-44-7 https://www.jk-sci.com/products/s57c4x-1220529 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/29de8fc37c8ea81dc311ac1d2d90435d.jpg?v=1791381571 Tazobactam lmpurity 29, 98.80% | 80353-26-0 Tazobactam lmpurity 29|C4X-1220529|80353-26-0 https://www.jk-sci.com/products/j5314251 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b6b28ff6a2545972eb0e96c23b9eb2f4.jpg?v=1791413851 D-Ala-Gly-OH·HCl, Purity ≥ 98% | 3997-90-8 D-Ala-Gly-OH·HCl|14251|3997-90-8 https://www.jk-sci.com/products/s57c4x-12224 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ea203c55d43ac1521ec337fa7b9e5bb8.jpg?v=1791381555 Calcipotriol EP Impurity D, 98.20% | 112827-99-3 Calcipotriol EP Impurity D|C4X-12224|112827-99-3 https://www.jk-sci.com/products/s57c4x-12222 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_4a47a70f-7058-4abc-b037-6cf20bcbbc2c.png?v=1791381564 Calcipotriol EP Impurity B, 86.40% Calcipotriol EP Impurity B|C4X-12222 https://www.jk-sci.com/products/s57c4x-12209 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cb2dadcb970567a49c7b1508f3028068_f2590aab-562c-4b65-8038-37b70fba8360.jpg?v=1791381571 1-Methylbiguanide Hydrochloride, 99.80% | 1674-62-0 1-Methylbiguanide Hydrochloride|C4X-12209|1674-62-0 https://www.jk-sci.com/products/j5314310 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/164946fafa679855c6d98ba97c574a14.jpg?v=1791413790 Acetyl-O-benzyl-L-serine, Assay ≥ 99% || Purity by HPLC ≥ 99% | 35886-80-7 Acetyl-O-benzyl-L-serine|14310|35886-80-7 https://www.jk-sci.com/products/a01256041 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/113772.png?v=1790086233 4,6-Dimethyldibenzothiophene, 97% | 1207-12-1 4,6-Dimethyldibenzothiophene, 97%|256041|1207-12-1 https://www.jk-sci.com/products/a01255983 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/255983_2ed78d01-48bc-4eaa-9b37-d092cf804098.png?v=1788925368 4,4'-Bis(2-sulfonatostyryl)biphenyl disodium salt, 98% | 27344-41-8 4,4'-Bis(2-sulfonatostyryl)biphenyl disodium salt, 98%|255983|27344-41-8 https://www.jk-sci.com/products/j5314321 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4412c722c02e0ab4e9571d6adab29f14.jpg?v=1791413778 Z-DL-proline, Purity by HPLC ≥ 98% | 5618-96-2 Z-DL-proline|14321|5618-96-2 https://www.jk-sci.com/products/j5314324 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ff6e90df916ce372c8e5a81209c5ffa5.jpg?v=1791413769 1-Hydroxy-7-azabenzotriazole solution, 0.6 M in DMF, Purity by HPLC ≥ 99% | 39968-33-7 1-Hydroxy-7-azabenzotriazole solution, 0.6 M in DMF|14324|39968-33-7 https://www.jk-sci.com/products/j5314399 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/771bd53ca7d11c90b28977a30fb881aa.jpg?v=1791413717 O-Methyl-D-tyrosine hydrochloride, Purity by HPLC ≥ 98% | 70601-63-7 O-Methyl-D-tyrosine hydrochloride|14399|70601-63-7 https://www.jk-sci.com/products/j5314354 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3a84c550c87d22bba9606356fd26b6c1.jpg?v=1791413752 2,2'-Dithio-bis(5-nitropyridine), Purity by HPLC ≥ 98% | 2127-10-8 2,2'-Dithio-bis(5-nitropyridine)|14354|2127-10-8 https://www.jk-sci.com/products/a01256641 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/258656.png?v=1790212754 6-Azauracil, 98% | 461-89-2 6-Azauracil, 98%|256641|461-89-2 https://www.jk-sci.com/products/j5314429 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b490e09627be6d2263af59701ae22d09.jpg?v=1791413693 3-Methoxy-2-butanol, Purity by GC ≥ 97% | 53778-72-6 3-Methoxy-2-butanol|14429|53778-72-6 https://www.jk-sci.com/products/j5314439 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/241f861b30ebefc92ff1bf1b27abb654.jpg?v=1791413683 Boc-S-allyloxy-amidomethyl-L-cysteine dicyclohexylamine salt, Purity by HPLC ≥ 98% Boc-S-allyloxy-amidomethyl-L-cysteine dicyclohexylamine salt|14439 https://www.jk-sci.com/products/j5314444 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fd53bcdf1bd1ccd52443b4a1db6f21fc.jpg?v=1791413679 Boc-O-allyloxycarbonyl-L-threonine dicyclohexylammonium salt, Purity by HPLC ≥ 96% | 147348-94-5 Boc-O-allyloxycarbonyl-L-threonine dicyclohexylammonium salt|14444|147348-94-5 https://www.jk-sci.com/products/j5314464 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/34306b4303216e5e0a9eb366508b287c.jpg?v=1791413646 Boc-3-amino-1-carboxymethyl-pyridin-2-one, Purity by HPLC ≥ 99% | 882847-09-8 Boc-3-amino-1-carboxymethyl-pyridin-2-one|14464|882847-09-8 https://www.jk-sci.com/products/j5314447 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c3963917670ae57ac0a9697fba43ca4f.jpg?v=1791413672 Fmoc-1-amino-cyclohexane acetic acid, Purity by HPLC ≥ 95% | 282524-98-5 Fmoc-1-amino-cyclohexane acetic acid|14447|282524-98-5 https://www.jk-sci.com/products/s57c4x-1223 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1306431fc1f5dbd79ddad194cc7b2a78.jpg?v=1791381546 Netupitant, 99.30% | 290297-26-6 Netupitant|C4X-1223|290297-26-6 https://www.jk-sci.com/products/j5314488 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bbc60df22a8a4103208b2e80dabc0101.jpg?v=1791413610 Boc-4-cyclohexyl-piperidine-4-carboxylic acid, Assay ≥ 97% | 273378-16-8 Boc-4-cyclohexyl-piperidine-4-carboxylic acid|14488|273378-16-8 https://www.jk-sci.com/products/s57c4x-122421 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7291191d08f5d9fba0a1674a66741301.jpg?v=1791381536 Cefadroxil Impurity 21, 93.30% | 144790-28-3 Cefadroxil Impurity 21|C4X-122421|144790-28-3 https://www.jk-sci.com/products/s57c4x-122417 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b514c01cf7ae05a7ab7f2e069aa6ae68.jpg?v=1791381542 Cefadroxil Impurity 17, 98.30% | 700-63-0 Cefadroxil Impurity 17|C4X-122417|700-63-0 https://www.jk-sci.com/products/s57c4x-12243 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b0f33b1f6877b9f5fd8229ff4c6c8f3b.jpg?v=1791381531 Cefadroxil EP Impurity G（Cefradine EP Impurity F/Cefalexin EP Impurity D）, 91.30% | 34876-35-2 Cefadroxil EP Impurity G（Cefradine EP Impurity F/Cefalexin EP Impurity D）|C4X-12243|34876-35-2 https://www.jk-sci.com/products/s57c4x-12252 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6c651aa69f7dc5799c4817a295713f75.jpg?v=1791381529 Trimethoprim EP Impurity B, 95.10% | 30806-86-1 Trimethoprim EP Impurity B|C4X-12252|30806-86-1 https://www.jk-sci.com/products/j5314494 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/806f1050e4dbec64c33cc813c120a628.jpg?v=1791413597 (2S,4S)-Fmoc-4-fluoro-pyrrolidine-2-carboxylic acid, Purity by HPLC ≥ 99% | 203866-19-7 (2S,4S)-Fmoc-4-fluoro-pyrrolidine-2-carboxylic acid|14494|203866-19-7 https://www.jk-sci.com/products/s57c4x-12254 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d27d5f06e3046ed31f15222628d78448.jpg?v=1791381525 Trimethoprim EP Impurity D, 95.90% | 92440-76-1 Trimethoprim EP Impurity D|C4X-12254|92440-76-1 https://www.jk-sci.com/products/s57c4x-122610 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_60c6df80-2e84-441f-a643-796e530e0ca3.png?v=1791381512 Doxepin EP Impurity C HCl, Purity>95% Doxepin EP Impurity C HCl|C4X-122610 https://www.jk-sci.com/products/s57c4x-12256 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/90ca8726f95aa3fbcbd7039e9ec520cd.jpg?v=1791381520 Trimethoprim EP Impurity F, Purity: 96.6% | 16285-82-8 Trimethoprim EP Impurity F|C4X-12256|16285-82-8 https://www.jk-sci.com/products/s57c4x-12263 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/389121.png?v=1791381514 Desmethyl Doxepin HCl (Nordoxepin HCl, Mixture of Z and E Isomers), Purity>95% | 2887-91-4 Desmethyl Doxepin HCl (Nordoxepin HCl, Mixture of Z and E Isomers)|C4X-12263|2887-91-4 https://www.jk-sci.com/products/j5314501 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cfb361190ffbd66972bc3ed3503abee7.jpg?v=1791413586 2-Iodo-L-phenylalanine, Purity by HPLC ≥ 98% | 167817-55-2 2-Iodo-L-phenylalanine|14501|167817-55-2 https://www.jk-sci.com/products/s57c4x-12272 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6fc140a27ec4a384d14df75d016e56c3.jpg?v=1791381508 Oxybuprocaine EP Impurity B, Purity: 100.0% | 23442-22-0 Oxybuprocaine EP Impurity B|C4X-12272|23442-22-0 https://www.jk-sci.com/products/s57c4x-12275 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c65fe7ac-540b-4f47-8bdc-70ca24cacb9b.png?v=1791381499 Oxybuprocaine Impurity 5, 99.90% Oxybuprocaine Impurity 5|C4X-12275 https://www.jk-sci.com/products/j5314812 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/78f55792d1734806fcc0f05bbd1e7de8.jpg?v=1791413564 Fluorescein 6-isothiocyanate, Purity by HPLC ≥ 95% | 3012-71-3 Fluorescein 6-isothiocyanate|14812|3012-71-3 https://www.jk-sci.com/products/j5314855 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/252f7845c1d1eaee86e45d9c0f4da250.jpg?v=1791413540 Na-Fmoc-Ne-7-methoxycoumarin-4-acetyl-L-lysine, Purity by HPLC ≥ 95% | 386213-32-7 Na-Fmoc-Ne-7-methoxycoumarin-4-acetyl-L-lysine|14855|386213-32-7 https://www.jk-sci.com/products/j5314881 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f16e625e794df6cdab9d04af4b563ea8.jpg?v=1791413525 L-Alanine isopropyl ester hydrochloride | 62062-65-1 L-Alanine isopropyl ester hydrochloride|14881|62062-65-1 https://www.jk-sci.com/products/j5315011 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/010c0024acec0c4be22ca6346016dc70.jpg?v=1791413488 Boc-(R,S)-3-amino-3-(4-bromophenyl)propionic acid, Purity by HPLC ≥ 98% | 282524-86-1 Boc-(R,S)-3-amino-3-(4-bromophenyl)propionic acid|15011|282524-86-1 https://www.jk-sci.com/products/s57c4x-123012 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eb5faf2229d4199993a4442252ed90ec.jpg?v=1791381490 Dexmedetomidine Impurity 12, 97.30% | 2240179-65-9 Dexmedetomidine Impurity 12|C4X-123012|2240179-65-9 https://www.jk-sci.com/products/j5314954 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e8fab16258f8d84d809fb33b82abe505.jpg?v=1791413507 g-Aminobutyric acid benzyl ester p-tosylate, Purity by HPLC ≥ 98% | 26727-22-0 g-Aminobutyric acid benzyl ester p-tosylate|14954|26727-22-0 https://www.jk-sci.com/products/s57c4x-12301 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6fc956d9447a692d1269f2473f181986.jpg?v=1791381503 Dexmedetomidine Impurity 1, 96.10% | 60907-90-6 Dexmedetomidine Impurity 1|C4X-12301|60907-90-6 https://www.jk-sci.com/products/j5315019 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5e5908789489ba06e3b80c44b8122cb0.jpg?v=1791413473 Boc-3-amino-5-(Fmoc-amino)benzoic acid, Purity by HPLC ≥ 99% | 779335-06-7 Boc-3-amino-5-(Fmoc-amino)benzoic acid|15019|779335-06-7 https://www.jk-sci.com/products/s57c4x-123016 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c30060c53a01ec45cddfa94719becc1c_0c24cc0a-4689-48ed-92d9-5d52eb1c9eeb.jpg?v=1791381483 Dexmedetomidine Impurity 16, 94.50% | 60907-88-2 Dexmedetomidine Impurity 16|C4X-123016|60907-88-2 https://www.jk-sci.com/products/s57c4x-12302 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/605316_d2670ed3-5a16-422d-b144-dbb50d86521f.png?v=1791381481 Dexmedetomidine Impurity 2, 98.40% | 5779-93-1 Dexmedetomidine Impurity 2|C4X-12302|5779-93-1 https://www.jk-sci.com/products/j5307421 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/134ec18f56a6f645bd5bb557cda36336.jpg?v=1791415589 Fmoc-b-(2-furyl)-D-alanine, Purity by HPLC ≥ 98% | 220497-85-8 Fmoc-b-(2-furyl)-D-alanine|07421|220497-85-8 https://www.jk-sci.com/products/s57c4x-123026 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/550791_ff585376-5e2d-46d9-b6ff-d2279ef8cb40.png?v=1791381474 Dexmedetomidine Impurity 26, Purity: 99.4% | 603-79-2 Dexmedetomidine Impurity 26|C4X-123026|603-79-2 https://www.jk-sci.com/products/s57c4x-123031 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/596309_21afd68b-5af0-4406-8ec0-8210d3e93609.png?v=1791381473 Dexmedetomidine Impurity 31, 98.80% | 2142-71-4 Dexmedetomidine Impurity 31|C4X-123031|2142-71-4 https://www.jk-sci.com/products/a01256775 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/616685_255d6f2a-e23d-4466-b24b-6e60d78a15dd.png?v=1790212750 3,4-Dihydroxybenzaldehyde, 98% | 139-85-5 3,4-Dihydroxybenzaldehyde, 98%|256775|139-85-5 https://www.jk-sci.com/products/j5310986 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8d838b25174a6134a4ad144de8c721a7.jpg?v=1791415031 Cinnamoyl-(trans)-L-phenylalanine | 4950-65-6 Cinnamoyl-(trans)-L-phenylalanine|10986|4950-65-6 https://www.jk-sci.com/products/s57c4x-123036 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f4755a08a327d52515500ae586ebf82b.jpg?v=1791381467 Dexmedetomidine Impurity 36, 99.20% | 86347-14-0 Dexmedetomidine Impurity 36|C4X-123036|86347-14-0 https://www.jk-sci.com/products/j5311827 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9dc452da4029e4a901349b1b0bfdc85d.jpg?v=1791414690 Boc-cis-1,4-aminocyclohexyl acetic acid, Assay by titration ≥ 99% || Purity by HPLC ≥ 98% | 327156-95-6 Boc-cis-1,4-aminocyclohexyl acetic acid|11827|327156-95-6 https://www.jk-sci.com/products/s57c4x-123040 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/82270c2d2ebc2075e7c50a49b94b1ea3.jpg?v=1791381463 Dexmedetomidine Impurity 40, 98.80% | 881409-85-4 Dexmedetomidine Impurity 40|C4X-123040|881409-85-4 https://www.jk-sci.com/products/j5312131 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bae27c2810e20ec4c1bfec295fa89083.jpg?v=1791414509 L-2,2-Dimethyl-thiaproline hydrochloride, Assay by titration ≥ 99% (NaOH) | 213475-47-9 L-2,2-Dimethyl-thiaproline hydrochloride|12131|213475-47-9 https://www.jk-sci.com/products/s57c4x-123054 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_5d9e5eba-7a8a-4c50-b421-c777a066045a.png?v=1791381459 Dexmedetomidine Impurity 54, 98.90% Dexmedetomidine Impurity 54|C4X-123054 https://www.jk-sci.com/products/s57c4x-123063 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/259515.png?v=1791381455 Dexmedetomidine impurity 63, Purity: 99.8% | 32917-52-5 Dexmedetomidine impurity 63|C4X-123063|32917-52-5 https://www.jk-sci.com/products/s57c4x-123058 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/13f5c96ccd541a06efd23d63de0d9c8c.jpg?v=1791381457 Dexmedetomidine Impurity 58, Purity: 100.0% | 104175-24-8 Dexmedetomidine Impurity 58|C4X-123058|104175-24-8 https://www.jk-sci.com/products/s57c4x-123068 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/24abeb3e0a56f0cd4c70af5da05b7cbb.jpg?v=1791381449 Dexmedetomidine Impurity 68, 98.90% | 86347-44-6 Dexmedetomidine Impurity 68|C4X-123068|86347-44-6 https://www.jk-sci.com/products/j5312293 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4c0a928d1a8f8a695f210c6e3a3bfe79.jpg?v=1791414446 Z-Leucine methyl ester, Purity by HPLC ≥ 97% | 51021-87-5 Z-Leucine methyl ester|12293|51021-87-5 https://www.jk-sci.com/products/j5312497 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/43286786ddaf29446e2b4c0c710267bd.jpg?v=1791414325 Fmoc-L-Lys(Boc)-Rink amide AM resin, Mesh Size 200 - 400 mesh || Substitution (meq/g) 0.3 - 0.8 mmol/g Fmoc-L-Lys(Boc)-Rink amide AM resin|12497 https://www.jk-sci.com/products/a01948092 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/240960.png?v=1790205825 N,N-Diisopropylaniline, 98% | 4107-98-6 N,N-Diisopropylaniline, 98%|948092|4107-98-6 https://www.jk-sci.com/products/s57c4x-12309 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/205073d3b0e3732731a48d6fb68cff78.jpg?v=1791381443 Dexmedetomidine Impurity 9, 92.40% | 2240179-63-7 Dexmedetomidine Impurity 9|C4X-12309|2240179-63-7 https://www.jk-sci.com/products/s57c4x-123220 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e593c5a2-c8b1-4ef9-b200-32a08e858e81.png?v=1791381438 Emtricitabine Thioacetate, 92.00% Emtricitabine Thioacetate|C4X-123220 https://www.jk-sci.com/products/s57c4x-123238 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_5994d6a2-3bff-4683-8375-f2fd7ff1f4f9.png?v=1791381431 Emtricitabine Int.Ph Impurity A, 96.90% Emtricitabine Int.Ph Impurity A|C4X-123238 https://www.jk-sci.com/products/j5312840 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/14a7cfb60319930e22ffd17684b849bc.jpg?v=1791414121 L-b-Leucine hydrochloride, Purity ≥ 98% (NMR) | 219310-09-5 L-b-Leucine hydrochloride|12840|219310-09-5 https://www.jk-sci.com/products/j5312860 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/72c69982596f2a70f8091ea58d1c66ba.jpg?v=1791414078 Boc-3-methyl-D-phenylalanine, Purity by HPLC ≥ 99% | 114873-14-2 Boc-3-methyl-D-phenylalanine|12860|114873-14-2 https://www.jk-sci.com/products/s57c4x-123310 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8fa530af38a404073719b668819ede03.jpg?v=1791381433 Tamoxifen EP Impurity F HCl, 99.40% | 15917-65-4 Tamoxifen EP Impurity F HCl|C4X-123310|15917-65-4 https://www.jk-sci.com/products/s57c4x-12332 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2a6aa8e58c92000c35fefc04d84b66d1.jpg?v=1791381427 Tamoxifen EP Impurity A, Purity: 98.8% | 13002-65-8 Tamoxifen EP Impurity A|C4X-12332|13002-65-8 https://www.jk-sci.com/products/j5312950 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/214799c16ea92aeab4740349d42e7d1b.jpg?v=1791414009 2,2,2-Trichloroacetimidic acid benzyl ester, Purity by GC ≥ 98% | 81927-55-1 2,2,2-Trichloroacetimidic acid benzyl ester|12950|81927-55-1 https://www.jk-sci.com/products/j5312989 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8c70b1650a159a02a73b30ee2ede5156.jpg?v=1791413975 3-(Fmoc-amino)-1-propanol, Purity by HPLC ≥ 99% | 157887-82-6 3-(Fmoc-amino)-1-propanol|12989|157887-82-6 https://www.jk-sci.com/products/s57c4x-123410 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/249ab6592369ab58073143350b639a83.jpg?v=1791381422 Candesartan Cilexetil EP Impurity C, 98.40% | 1185255-99-5 Candesartan Cilexetil EP Impurity C|C4X-123410|1185255-99-5 https://www.jk-sci.com/products/j5314098 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ef0c44017127257f085f1f7e0d082ac6.jpg?v=1791413880 Diethylene glycol dimethyl ether, Purity by GC ≥ 99.5% | 111-96-6 Diethylene glycol dimethyl ether|14098|111-96-6 https://www.jk-sci.com/products/a01948568 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/10612009b40be530e4b1fd62d8b3771b.jpg?v=1790205805 Titanium(IV) oxide, 99.9%, rutile | 1317-80-2 Titanium(IV) oxide, 99.9%, rutile|948568|1317-80-2 https://www.jk-sci.com/products/j5314253 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/35e812e5a448e62853027f377d2cceb4.jpg?v=1791413849 L-2,4-Diaminobutyric acid hydrochloride | 1482-98-0 L-2,4-Diaminobutyric acid hydrochloride|14253|1482-98-0 https://www.jk-sci.com/products/s57c4x-123414 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0a4b98ac4dad054aaf69ee8222d001d3.jpg?v=1791381416 Candesartan Cilexetil Impurity 14, 92.50% | 136304-78-4 Candesartan Cilexetil Impurity 14|C4X-123414|136304-78-4 https://www.jk-sci.com/products/j5314318 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/227123fe055a7b56c72db43d3059ff69.jpg?v=1791413782 L-2-Cyclohexylglycine, Assay ≥ 98% | 14328-51-9 L-2-Cyclohexylglycine|14318|14328-51-9 https://www.jk-sci.com/products/j5314348 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7df48fee188ccb844d11582f9dc22284.jpg?v=1791413758 3-Nitro-D-phenylalanine, Purity by HPLC ≥ 98% | 169530-97-6 3-Nitro-D-phenylalanine|14348|169530-97-6 https://www.jk-sci.com/products/j5314406 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6a8ed2a5674011f4d21bcb04b5607d0d.jpg?v=1791413708 Boc-O-benzyl-D-b-homoserine, Purity by HPLC ≥ 98% | 718608-08-3 Boc-O-benzyl-D-b-homoserine|14406|718608-08-3 https://www.jk-sci.com/products/j5314441 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/768d2ca85163bc5c1cf82112ea589e09.jpg?v=1791413684 Gly-OBg·TFA, Purity by HPLC ≥ 98% | 1423037-49-3 Gly-OBg·TFA|14441|1423037-49-3 https://www.jk-sci.com/products/j5314454 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c22bab898ca181dae927ce82d810a071.jpg?v=1791413662 Boc-Gabapentin, Purity by HPLC ≥ 95% | 227626-60-0 Boc-Gabapentin|14454|227626-60-0 https://www.jk-sci.com/products/s57c4x-123424 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bfa7fcebd9079317d362d958abd0ee38.jpg?v=1791381415 Candesartan Cilexetil Impurity 24, 98.90% | 139481-28-0 Candesartan Cilexetil Impurity 24|C4X-123424|139481-28-0 https://www.jk-sci.com/products/j5314489 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a230660739a4cd10020729a4c30802d9.jpg?v=1791413604 Fmoc-4-cyclohexyl-piperidine-4-carboxylic acid, Purity by HPLC ≥ 98% | 882847-21-4 Fmoc-4-cyclohexyl-piperidine-4-carboxylic acid|14489|882847-21-4 https://www.jk-sci.com/products/j5314864 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/08431f2f9f10b91c2fa308a0917b89b4.jpg?v=1791413531 Na-Fmoc-Nin-formyl-L-tryptophan, Assay by titration ≥ 98% || Purity by HPLC ≥ 99% | 152338-45-9 Na-Fmoc-Nin-formyl-L-tryptophan|14864|152338-45-9 https://www.jk-sci.com/products/j5314665 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/328698.png?v=1791413581 Na,Na-Bis-Fmoc-L-cystine bis(tert-butyl ester), Purity by HPLC ≥ 98% || Purity ≥ 98% (NMR) | 139592-37-3 Na,Na-Bis-Fmoc-L-cystine bis(tert-butyl ester)|14665|139592-37-3 https://www.jk-sci.com/products/j5315004 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f116eb489d5fa642d7e80b950f83073d.jpg?v=1791413503 Boc-5-amino-2-methoxybenzoic acid, Purity by HPLC ≥ 99% | 1075242-43-1 Boc-5-amino-2-methoxybenzoic acid|15004|1075242-43-1 https://www.jk-sci.com/products/j5315038 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8eaf1154e7501957eb937db7ef9dcb79.jpg?v=1791413443 Fmoc-L-glutamic acid a-7-amido-4-methylcoumarin, Purity by HPLC ≥ 98% | 957311-37-4 Fmoc-L-glutamic acid a-7-amido-4-methylcoumarin|15038|957311-37-4 https://www.jk-sci.com/products/j5315032 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/14c53f3a5c2236f80b4e9a772d04e5f0.jpg?v=1791413451 3-(Boc-aminomethyl)benzylamine hydrochloride, Purity by HPLC ≥ 99% | 914465-97-7 3-(Boc-aminomethyl)benzylamine hydrochloride|15032|914465-97-7 https://www.jk-sci.com/products/s57c4x-123436 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_5cbf2726-4629-4956-852d-1195722d8015.png?v=1791381409 Candesartan Cilexetil Impurity 36, 98.80% Candesartan Cilexetil Impurity 36|C4X-123436 https://www.jk-sci.com/products/j5315054 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/193405b7fc76107f912c0a4ea49b6909.jpg?v=1791413415 Fmoc-4-amino-1-carboxymethylpiperidine, Purity by HPLC ≥ 97% | 221352-82-5 Fmoc-4-amino-1-carboxymethylpiperidine|15054|221352-82-5 https://www.jk-sci.com/products/s57c4x-12346 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0593ff6edf496fffd13fbd1363f35231.jpg?v=1791381404 Candesartan Cilexetil EP Impurity F, 99.90% | 914613-36-8 Candesartan Cilexetil EP Impurity F|C4X-12346|914613-36-8 https://www.jk-sci.com/products/s57c4x-12348 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/120416.png?v=1791381394 Candesartan Cilexetil EP Impurity H, 98.00% | 170791-09-0 Candesartan Cilexetil EP Impurity H|C4X-12348|170791-09-0 https://www.jk-sci.com/products/s57c4x-12351 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/278509.png?v=1791381394 Piracetam EP Impurity D, 99.80% | 53934-76-2 Piracetam EP Impurity D|C4X-12351|53934-76-2 https://www.jk-sci.com/products/s57c4x-123514 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/501649.png?v=1791381385 Piracetam Impurity 14, Purity: 100.0% | 2555-05-7 Piracetam Impurity 14|C4X-123514|2555-05-7 https://www.jk-sci.com/products/s57c4x-123519 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_661ffe80-6747-498b-89b6-38d044075131.png?v=1791381383 Piracetam Impurity 19, 96.10% Piracetam Impurity 19|C4X-123519 https://www.jk-sci.com/products/j5315062 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0926d5b4b3d7ffbfb7c7a03ad4640e2b.jpg?v=1791413406 Fmoc-(R,S)-3-amino-3-(2-naphthyl)propionic acid, Purity by HPLC ≥ 97% | 269078-81-1 Fmoc-(R,S)-3-amino-3-(2-naphthyl)propionic acid|15062|269078-81-1 https://www.jk-sci.com/products/j5315069 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/114337e35f037e05bfa2e1bb10ee8cf9.jpg?v=1791413393 Fmoc-(S)3-amino-2-(phenylsulfonylamino)propionic acid, Assay by titration ≥ 97% || Purity by HPLC ≥ 98% | 273399-94-3 Fmoc-(S)3-amino-2-(phenylsulfonylamino)propionic acid|15069|273399-94-3 https://www.jk-sci.com/products/j5315081 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/850a14d5b990224d6aaeced1b78e94a8.jpg?v=1791413369 Fmoc-(1R,2R)-2-aminocyclohexane carboxylic acid, Purity by HPLC ≥ 99% | 389057-34-5 Fmoc-(1R,2R)-2-aminocyclohexane carboxylic acid|15081|389057-34-5 https://www.jk-sci.com/products/j5315106 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b850e3f9a7752693d5b0b53c23ce308c.jpg?v=1791413324 Boc-3-iodo-L-phenylalanine, Purity by HPLC ≥ 98% | 273221-75-3 Boc-3-iodo-L-phenylalanine|15106|273221-75-3 https://www.jk-sci.com/products/s57c4x-123523 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_2c329ce8-7ba7-4714-9e2b-7c5f86a839ed.png?v=1791381378 Piracetam Impurity 23, Purity: 100.0% Piracetam Impurity 23|C4X-123523 https://www.jk-sci.com/products/j5315111 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/35a7926e20753318e7a46ac028e4b040.jpg?v=1791413311 Fmoc-2-nitro-D-phenylalanine, Purity by HPLC ≥ 97% | 478183-70-9 Fmoc-2-nitro-D-phenylalanine|15111|478183-70-9 https://www.jk-sci.com/products/s57c4x-123526 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_68ec92c5-822d-49cb-b98e-9cd0fc0a4440.png?v=1791381375 Piracetam Impurity 26, 84.40% Piracetam Impurity 26|C4X-123526 https://www.jk-sci.com/products/s57c4x-123531 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_b4b2a16d-5956-4794-9ab0-b19f76d7afe8.png?v=1791381370 Piracetam impurity 31, 98.20% Piracetam impurity 31|C4X-123531 https://www.jk-sci.com/products/s57c4x-12354 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/98701ad5b60fe978a32db6578aa1cdab.jpg?v=1791381365 Piracetam EP Impurity C, 91.90% | 61516-73-2 Piracetam EP Impurity C|C4X-12354|61516-73-2 https://www.jk-sci.com/products/s57c4x-12356 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/93c1d644099aebb8a7b33bf025d9d0ca.jpg?v=1791381365 Piracetam Impurity 6, 95.30% | 1096803-44-9 Piracetam Impurity 6|C4X-12356|1096803-44-9 https://www.jk-sci.com/products/s57c4x-1236101 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_3007aee8-ce8b-444a-b443-149c3e25dd9b.png?v=1791381358 Isavuconazole Impurity 101, 95.90% Isavuconazole Impurity 101|C4X-1236101 https://www.jk-sci.com/products/s57c4x-1236109 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_d6a9dfe4-f1e8-43db-adc8-446af39a9887.png?v=1791381348 Isavuconazole Impurity 109, 99.90% Isavuconazole Impurity 109|C4X-1236109 https://www.jk-sci.com/products/s57c4x-1236104 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cfc4a1b0dd6bfd2a1c48ef4985791b03.jpg?v=1791381353 Isavuconazole Impurity 104, 97.10% | 2922040-42-2 Isavuconazole Impurity 104|C4X-1236104|2922040-42-2 https://www.jk-sci.com/products/s57c4x-113530 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d492e3c464b28fcff0cd5a816b4b5398.jpg?v=1791383231 Olaparib Impurity 30, 97.60% | 61260-15-9 Olaparib Impurity 30|C4X-113530|61260-15-9 https://www.jk-sci.com/products/s57c4x-1236113 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_3f53e66a-e421-4981-b2f6-238b7beeb82e.png?v=1791381342 Isavuconazole Impurity 113, 93.90% Isavuconazole Impurity 113|C4X-1236113 https://www.jk-sci.com/products/s57c4x-109525 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/282856_aab974a7-c6ef-4df5-8f5f-409cdeba1aef.png?v=1791384739 Amlodipine Impurity25, 99.90% | 3891-07-4 Amlodipine Impurity25|C4X-109525|3891-07-4 https://www.jk-sci.com/products/s57c4x-123614 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_4328fae3-c269-4976-afe5-de3da6735566.png?v=1791381338 Isavuconazole Impurity 14, 84.40% Isavuconazole Impurity 14|C4X-123614 https://www.jk-sci.com/products/s57c4x-114432 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7138819cef81117e3ea39381409dd3d6.jpg?v=1791382933 Sitagliptin EP Impurity B, 98.10% | 486460-31-5 Sitagliptin EP Impurity B|C4X-114432|486460-31-5 https://www.jk-sci.com/products/s57c4x-11563 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/403553_523fc161-0e9a-411e-8d45-8515ecd1639a.png?v=1791382734 Diosmin EP Impurity C, 92.20% | 552-57-8 Diosmin EP Impurity C|C4X-11563|552-57-8 https://www.jk-sci.com/products/j5315118 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eba37d88de2fce36dae01f7cc840119f.jpg?v=1791413295 Fmoc-2-iodo-L-phenylalanine, Purity by HPLC ≥ 98% | 210282-32-9 Fmoc-2-iodo-L-phenylalanine|15118|210282-32-9 https://www.jk-sci.com/products/s57c4x-11626 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/06c7be9c8c6c5a7f77760206a2796e80.jpg?v=1791382616 Febuxostat Impurity 6, 97.90% | 1239233-87-4 Febuxostat Impurity 6|C4X-11626|1239233-87-4 https://www.jk-sci.com/products/j5315154 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cc159cfa9cc8d935833a934270dbe4b9.jpg?v=1791413256 Cefpirome Sulfate, Assay ≥ 83%, ≥ 760 ug/mg (Potency : Anhdrous basis) | 98753-19-6 Cefpirome Sulfate|15154|98753-19-6 https://www.jk-sci.com/products/j5315125 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3ed32effa647433517f18bfe225f57b7.jpg?v=1791413280 L-Hydroorotic acid, Assay by titration ≥ 98% | 5988-19-2 L-Hydroorotic acid|15125|5988-19-2 https://www.jk-sci.com/products/s57c4x-116417 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/313472_2c693c54-c89d-4dee-b9a1-1f3592f50a05.png?v=1791382551 Oxcarbazepine Impurity 17, 98.70% | 578-95-0 Oxcarbazepine Impurity 17|C4X-116417|578-95-0 https://www.jk-sci.com/products/a01948772 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1099919.png?v=1788913274 1-Benzylpiperidine-4-carbonitrile, 97% | 62718-31-4 1-Benzylpiperidine-4-carbonitrile, 97%|948772|62718-31-4 https://www.jk-sci.com/products/j5300639 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c386d320959d03ca70d5fa0f1db30743.jpg?v=1791422780 9-Hydroxyxanthene | 90-46-0 9-Hydroxyxanthene|00639|90-46-0 https://www.jk-sci.com/products/s57c4x-116723 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e41a7851f4407af48bd4363792d4d6d0.jpg?v=1791382373 Bedaquiline Impurity 23, Purity: 99.6% | 1032468-55-5 Bedaquiline Impurity 23|C4X-116723|1032468-55-5 https://www.jk-sci.com/products/j5315203 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/aeaf77c93f034c8b90f67d3ccde000ff.jpg?v=1791413229 Boc-4-nitro-L-b-homophenylalanine, Purity by HPLC ≥ 99% | 127106-71-2 Boc-4-nitro-L-b-homophenylalanine|15203|127106-71-2 https://www.jk-sci.com/products/j5315217 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/40ea3ebe050f931b59ef7f9a6490bcc3.jpg?v=1791413214 (R)-3-Amino-3-(4-fluorophenyl)propionic acid, Assay ≥ 98% | 151911-23-8 (R)-3-Amino-3-(4-fluorophenyl)propionic acid|15217|151911-23-8 https://www.jk-sci.com/products/j5315241 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/08425a85934894aee445e372583e6f8a.jpg?v=1791413171 Boc-2-chloro-L-b-homophenylalanine, Purity ≥ 99% | 218608-95-8 Boc-2-chloro-L-b-homophenylalanine|15241|218608-95-8 https://www.jk-sci.com/products/j5315229 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4c77db49c805cfe9d338d61318700930.jpg?v=1791413190 Boc-(3-benzothienyl)-D-b-homoalanine, Purity by HPLC ≥ 99% | 190190-48-8 Boc-(3-benzothienyl)-D-b-homoalanine|15229|190190-48-8 https://www.jk-sci.com/products/s57c4x-117612 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/24eff1d3bc598c67ca26369437f72841.jpg?v=1791382257 Salbutamol EP Impurity G(Hydrochloride), 94.70% | 24085-08-3 Salbutamol EP Impurity G(Hydrochloride)|C4X-117612|24085-08-3 https://www.jk-sci.com/products/s57c4x-118370 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/052efdb97533f5c8f5a6f098dd60e40a_113ff862-2d54-47a6-b691-71ba23b5b618.jpg?v=1791382129 Terbutaline EP Impurity D Hydrochloride, 93.00% | 94109-61-2 Terbutaline EP Impurity D Hydrochloride|C4X-118370|94109-61-2 https://www.jk-sci.com/products/s57c4x-11879 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/406476_13913c02-51d0-4c7a-9694-01920a691f83.png?v=1791382076 Tamsulosin EP Impurity I, 98.00% | 3259-03-8 Tamsulosin EP Impurity I|C4X-11879|3259-03-8 https://www.jk-sci.com/products/j5312227 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cb3951d3772c94933889e0dd8ddb6aa4.jpg?v=1791414469 Na-Z-Nd-xanthyl-D-glutamine, Assay by titration ≥ 97% || Purity by HPLC ≥ 99% | 327981-02-2 Na-Z-Nd-xanthyl-D-glutamine|12227|327981-02-2 https://www.jk-sci.com/products/s57c4x-118012 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ecb2e16bf94c1c72011d7a76f672f95e.jpg?v=1791382166 Benzyl methanesulfonate, 94.40% | 55791-06-5 Benzyl methanesulfonate|C4X-118012|55791-06-5 https://www.jk-sci.com/products/j5315251 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a07a0d89b4c6a727ecd7761d8a6c3163.jpg?v=1791413159 (S)-Boc-4-(4-pyridyl)-b-Homoala-OH, Chiral HPLC ≥ 99.5% (ee) || Purity by HPLC ≥ 98% | 219297-13-9 (S)-Boc-4-(4-pyridyl)-b-Homoala-OH|15251|219297-13-9 https://www.jk-sci.com/products/s57c4x-11768 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/51436ba5df2023c6cdb695e7ce86c401.jpg?v=1791382217 Salbutamol EP Impurity Q, 93.00% | 54030-32-9 Salbutamol EP Impurity Q|C4X-11768|54030-32-9 https://www.jk-sci.com/products/j5311662 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e4e4f0e028c58ba3b143e6b7d4ccea2f.jpg?v=1791414842 L-2-Cyclohexylglycine trifluoroacetate, Assay ≥ 96% | 14328-51-9 L-2-Cyclohexylglycine trifluoroacetate|11662|14328-51-9 https://www.jk-sci.com/products/s57c4x-11697 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d475f6015fe0fce4ac0bc7128a74cee5.jpg?v=1791382302 Rosuvastatin EP Impurity G (Calcium Salt), 95.70% | 2414245-11-5 Rosuvastatin EP Impurity G (Calcium Salt)|C4X-11697|2414245-11-5 https://www.jk-sci.com/products/j5314922 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3395c59cff43ebc1164236421a1160eb.jpg?v=1791413521 3-(3'-Pyridyl)-D-alanine methyl ester dihydrochloride, Assay ≥ 97% | 197088-84-9 3-(3'-Pyridyl)-D-alanine methyl ester dihydrochloride|14922|197088-84-9 https://www.jk-sci.com/products/j5314369 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/328d8d5d590b28dfee83764be0149751.jpg?v=1791413737 3-Iodo-D-tyrosine, Purity by HPLC ? 98% | 25799-58-0 3-Iodo-D-tyrosine|14369|25799-58-0 https://www.jk-sci.com/products/j5314051 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/35464b814d19efd1f339eaf33177ef30.jpg?v=1791413914 3-Amino-1-carboxymethyl-pyridin-2-one·TFA, Purity by HPLC ≥ 99% | 1373519-47-1 3-Amino-1-carboxymethyl-pyridin-2-one·TFA|14051|1373519-47-1 https://www.jk-sci.com/products/j5315266 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a03b0f764a1a225394e3e6ae1d7fcf42.jpg?v=1791413136 2-Chloro-D-b-homophenylalanine hydrochloride | 268734-28-7 2-Chloro-D-b-homophenylalanine hydrochloride|15266|268734-28-7 https://www.jk-sci.com/products/s57c4x-11976 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dbb5d954c495d629ddeced5412ed3251.jpg?v=1791381957 Sodium Fusidate EP Impurity F, 98.20% | 1415035-94-7 Sodium Fusidate EP Impurity F|C4X-11976|1415035-94-7 https://www.jk-sci.com/products/j5314446 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3e2c779902ffe6bbc93eb723cd306ae3.jpg?v=1791413675 Boc-1-amino-cyclohexane acetic acid, Purity by HPLC ≥ 99% | 187610-56-6 Boc-1-amino-cyclohexane acetic acid|14446|187610-56-6 https://www.jk-sci.com/products/s57c4x-119712 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/05ef96bdd01a7878a50a9c20f65ffadf.jpg?v=1791381975 Sodium Fusidate EP Impurity L, 99.20% | 74048-41-2 Sodium Fusidate EP Impurity L|C4X-119712|74048-41-2 https://www.jk-sci.com/products/j5314290 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5d85e1516db07aaa25d06c0a462ab1eb.jpg?v=1791413814 DL-Glutamic acid g-tert-butyl ester, Purity ≥ 98% DL-Glutamic acid g-tert-butyl ester|14290 https://www.jk-sci.com/products/j5312757 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8249d9c0f8809997376fde076996fca2.jpg?v=1791414221 L-b-Homoleucine hydrochloride, Purity ≥ 98% | 96386-92-4 L-b-Homoleucine hydrochloride|12757|96386-92-4 https://www.jk-sci.com/products/j5312904 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1ef8a31a215b41fffe0eb35663773a70.jpg?v=1791414050 Boc-diethanolamine, Assay ≥ 98% | 103898-11-9 Boc-diethanolamine|12904|103898-11-9 https://www.jk-sci.com/products/s57c4x-119511 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e5002a6a0823def75128f2381f9f0f5d.jpg?v=1791381990 All-rac-alfa-Tocopheryl Acetate EP Impurity D (Mixture of Isomers), 97.20% | 2734344-00-2 All-rac-alfa-Tocopheryl Acetate EP Impurity D (Mixture of Isomers)|C4X-119511|2734344-00-2 https://www.jk-sci.com/products/s57c4x-119015 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/77da255036d60b861ecce5a2eddf58c4.jpg?v=1791382039 Captopril EP Impurity F, Purity: 95.6% | 63250-36-2 Captopril EP Impurity F|C4X-119015|63250-36-2 https://www.jk-sci.com/products/j5314500 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8d35dca6d9562c5f62f55d1a601be59b.jpg?v=1791413588 Boc-erythro-b-phenylserine, Purity by HPLC ≥ 97% | 93847-77-9 Boc-erythro-b-phenylserine|14500|93847-77-9 https://www.jk-sci.com/products/a01950831 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/409185.png?v=1788913228 (E)-1,2-Bis(4-bromophenyl)ethene, 98% | 18869-30-2 (E)-1,2-Bis(4-bromophenyl)ethene, 98%|950831|18869-30-2 https://www.jk-sci.com/products/s57c4x-119819 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_8bd687a5-08d1-41c7-9345-b8867dff89c7.png?v=1791381933 Eltrombopag Impurity 19, Purity: 98.4% Eltrombopag Impurity 19|C4X-119819 https://www.jk-sci.com/products/s57c4x-119871 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_28d551ab-df7a-4a54-a62c-bed2ad88a395.png?v=1791381916 Eltrombopag Impurity 71, Purity: 95.3% Eltrombopag Impurity 71|C4X-119871 https://www.jk-sci.com/products/s57c4x-119923 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/43950a55ef4a11140f3d3e7098064d82.jpg?v=1791381902 Simvastatin EP Impurity I, Purity: 99.2% | 79902-42-4 Simvastatin EP Impurity I|C4X-119923|79902-42-4 https://www.jk-sci.com/products/j5315022 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b7655dd0b3c7010cb10594e9cf93ee64.jpg?v=1791413467 Boc-(3S)-1-pyrrolidine-3-carboxylic acid, Purity ≥ 98% (NMR) | 140148-70-5 Boc-(3S)-1-pyrrolidine-3-carboxylic acid|15022|140148-70-5 https://www.jk-sci.com/products/s57c4x-120210 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f8336869cab702324733c613886c3069.jpg?v=1791381868 Melitracen Impurity 10, Purity: 99.4% | 85199-69-5 Melitracen Impurity 10|C4X-120210|85199-69-5 https://www.jk-sci.com/products/s57c4x-12011 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/316261_a9cabd9a-c6ba-4c9c-949f-0c08f6a11e09.png?v=1791381884 Cefotaxime EP Impurity A, 94.40% | 65052-63-3 Cefotaxime EP Impurity A|C4X-12011|65052-63-3 https://www.jk-sci.com/products/j5315046 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/12c46dc35a078ec4cf685194dfe638f3.jpg?v=1791413430 Fmoc-5-amino-2-methoxybenzoic acid | 165073-03-3 Fmoc-5-amino-2-methoxybenzoic acid|15046|165073-03-3 https://www.jk-sci.com/products/s57c4x-120329 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ef15e09622a2c88fae8b35363fc1695f.jpg?v=1791381844 (R,R)-Hydroxy Bupropion, Purity>95% | 192374-15-5 (R,R)-Hydroxy Bupropion|C4X-120329|192374-15-5 https://www.jk-sci.com/products/s57c4x-120510 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6f751dd22718f138982b81839bceddf7.jpg?v=1791381820 Tazobactam Impurity 10, Purity: 100.0% | 87579-78-0 Tazobactam Impurity 10|C4X-120510|87579-78-0 https://www.jk-sci.com/products/j5315065 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2ea017f112cb4147cc773e1f012b1bad.jpg?v=1791413401 Fmoc-N-(4-Boc-aminobutyl)glycine, Purity by HPLC ≥ 98% | 171856-09-0 Fmoc-N-(4-Boc-aminobutyl)glycine|15065|171856-09-0 https://www.jk-sci.com/products/s57c4x-120812 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dfd1dd0378f2def4ea8b35a7e50658d2.jpg?v=1791381805 Posaconazole Impurity 12(S,S,R,R), 95.60% | 2243785-97-7 Posaconazole Impurity 12(S,S,R,R)|C4X-120812|2243785-97-7 https://www.jk-sci.com/products/s57c4x-1208174 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8f285f9b1dbf8f059e23fdd9792d4160.jpg?v=1791381783 Posaconazole Impurity 174, 98.10% | 2169241-14-7 Posaconazole Impurity 174|C4X-1208174|2169241-14-7 https://www.jk-sci.com/products/s57c4x-1208201 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_2bd0a63b-1d28-4894-abe3-c8417432cfb0.png?v=1791381766 Posaconazole Impurity 201, 96.20% Posaconazole Impurity 201|C4X-1208201 https://www.jk-sci.com/products/s57c4x-120857 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/77010d34395cdb77f24318c1d3203181.jpg?v=1791381731 Posaconazole Impurity 57, 98.70% | 160709-02-4 Posaconazole Impurity 57|C4X-120857|160709-02-4 https://www.jk-sci.com/products/s57c4x-120843 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d83ec0c6e71c3d31f126aa073a273b48.jpg?v=1791381748 Posaconazole Impurity 43, 99.20% | 357189-95-8 Posaconazole Impurity 43|C4X-120843|357189-95-8 https://www.jk-sci.com/products/a01951398 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/600935.png?v=1788913206 tert-Butyl (4-(methylamino)butyl)carbamate, 97% | 874831-66-0 tert-Butyl (4-(methylamino)butyl)carbamate, 97%|951398|874831-66-0 https://www.jk-sci.com/products/s57c4x-121021 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f87472b749ce5e49c21e052389435542.jpg?v=1791381704 Cefdinir CP Impurity M, 96.10% | 946573-41-7 Cefdinir CP Impurity M|C4X-121021|946573-41-7 https://www.jk-sci.com/products/j5315084 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/603118570be1316fa1add05b6f9e5343.jpg?v=1791413364 Fmoc-(R,S)-3-amino-N-1-carboxymethyl-2-oxo-5-cyclohexyl-1,4-benzodiazepine, Purity by HPLC ≥ 99% | 269078-83-3 Fmoc-(R,S)-3-amino-N-1-carboxymethyl-2-oxo-5-cyclohexyl-1,4-benzodiazepine|15084|269078-83-3 https://www.jk-sci.com/products/s57c4x-121116 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/100f64cd06f355f3c2545573888500b0.jpg?v=1791381669 Paracetamol EP Impurity L, 91.60% | 2514961-29-4 Paracetamol EP Impurity L|C4X-121116|2514961-29-4 https://www.jk-sci.com/products/s57c4x-121126 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/691d7f5390d4669543e7e0739d35bdf5.jpg?v=1791381663 Paracetamol EP Impurity M, 97.30% | 1752-24-5 Paracetamol EP Impurity M|C4X-121126|1752-24-5 https://www.jk-sci.com/products/s57c4x-12114 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/318231_ed029ec8-7be7-44df-bb38-543a3fffc27d.png?v=1791381658 Paracetamol EP Impurity C, 97.50% | 3964-54-3 Paracetamol EP Impurity C|C4X-12114|3964-54-3 https://www.jk-sci.com/products/s57c4x-121052 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/514777_e194a09b-266b-42e0-8ce4-ab1a6f859886.png?v=1791381688 Cefdinir Impurity 52, 98.70% | 66338-96-3 Cefdinir Impurity 52|C4X-121052|66338-96-3 https://www.jk-sci.com/products/j5315112 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8bcec8f002a25efedcf211ee66482982.jpg?v=1791413311 Fmoc-3-bromo-D-phenylalanine, Assay ≥ 98% | 220497-81-4 Fmoc-3-bromo-D-phenylalanine|15112|220497-81-4 https://www.jk-sci.com/products/s57c4x-12122 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/706e4feb44a7a28746c06a82961de55b.jpg?v=1791381646 Ceftazidime EP Impurity B, 90.40% | 97148-38-4 Ceftazidime EP Impurity B|C4X-12122|97148-38-4 https://www.jk-sci.com/products/j5315135 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7095d1c6deae58363acf4f1af1bb4ce6.jpg?v=1791413271 Fmoc-b-cyano-L-alanine, Purity by HPLC ≥ 95% | 127273-06-7 Fmoc-b-cyano-L-alanine|15135|127273-06-7 https://www.jk-sci.com/products/s57c4x-12125 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fb3ee21a8a768ca393e697299c96cd42.jpg?v=1791381640 Ceftazidime EP Impurity E, 87.70% | 102772-66-7 Ceftazidime EP Impurity E|C4X-12125|102772-66-7 https://www.jk-sci.com/products/j5315209 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eea68819b91b3bb0e3c91f3383defe7b.jpg?v=1791413224 (R)-3-Amino-3-(4-chlorophenyl)propionic acid, Purity by HPLC ≥ 99% | 131690-61-4 (R)-3-Amino-3-(4-chlorophenyl)propionic acid|15209|131690-61-4 https://www.jk-sci.com/products/s57c4x-12132 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7e60380ac7903ef95f094cb4b105a684.jpg?v=1791381626 Roxatidine Impurity 2, 82.80% | 97900-87-3 Roxatidine Impurity 2|C4X-12132|97900-87-3 https://www.jk-sci.com/products/s57c4x-121343 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/146235_f6b7ed7b-0f01-41a1-8d7c-eab3cf0a7ff6.png?v=1791381616 Roxatidine Impurity 43, 96.00% | 100-83-4 Roxatidine Impurity 43|C4X-121343|100-83-4 https://www.jk-sci.com/products/s57c4x-121356 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7fa83c534b92108204ac244e3bbf855e.jpg?v=1791381609 Roxatidine Impurity 56, Purity: 99.4% | 132513-51-0 Roxatidine Impurity 56|C4X-121356|132513-51-0 https://www.jk-sci.com/products/j5315235 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2049c2d24d4c4d35c71d954b285b37b1.jpg?v=1791413180 Boc-(3-pyridyl)-L-b-homoalanine, Purity by HPLC ≥ 99% | 208404-16-4 Boc-(3-pyridyl)-L-b-homoalanine|15235|208404-16-4 https://www.jk-sci.com/products/j5315256 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b47c7c24e42e9608c443b1fcdfbcb32a.jpg?v=1791413150 Fmoc-(S)-3-amino-3-(4-bromophenyl)propionic acid, Purity by HPLC ≥ 97% | 220497-68-7 Fmoc-(S)-3-amino-3-(4-bromophenyl)propionic acid|15256|220497-68-7 https://www.jk-sci.com/products/s57c4x-12136 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/201789_97fd665c-1cd5-4259-b814-b7c01e41df9e.png?v=1791381602 Roxatidine Acetate Hydrochloride, 99.10% | 93793-83-0 Roxatidine Acetate Hydrochloride|C4X-12136|93793-83-0 https://www.jk-sci.com/products/a01951459 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/115822.png?v=1788913201 2-(4-Benzoyl-3-hydroxyphenoxy)ethyl acrylate, 97% | 16432-81-8 2-(4-Benzoyl-3-hydroxyphenoxy)ethyl acrylate, 97%|951459|16432-81-8 https://www.jk-sci.com/products/s57c4x-12156 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c82799ae-143e-4fba-b0ab-758c736193ed.png?v=1791381587 Cefradine EP Impurity D, 90.30% Cefradine EP Impurity D|C4X-12156 https://www.jk-sci.com/products/s57c4x-12204 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/391429_7f5c0d4f-99bf-4cc0-9ff4-260faf45d20d.png?v=1791381577 Metformin EP Impurity D, 100.00% | 108-78-1 Metformin EP Impurity D|C4X-12204|108-78-1 https://www.jk-sci.com/products/s57c4x-122017 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2d85509cce628e1e8036ed8f93f1377a.jpg?v=1791381582 Metformin Impurity 17, 99.90% | 36897-89-9 Metformin Impurity 17|C4X-122017|36897-89-9 https://www.jk-sci.com/products/j5315276 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/18618aaa543ecf7a926fef43d528171a.jpg?v=1791413123 Boc-3,4-difluoro-D-b-homophenylalanine, Purity by HPLC ≥ 99% | 269396-59-0 Boc-3,4-difluoro-D-b-homophenylalanine|15276|269396-59-0 https://www.jk-sci.com/products/s57c4x-12221 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/58618ff73d42852e348eae9630fb193f.jpg?v=1791381566 Calcipotriol EP Impurity A, 72.50% | 126860-83-1 Calcipotriol EP Impurity A|C4X-12221|126860-83-1 https://www.jk-sci.com/products/s57c4x-122234 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d73e0e784c955b3c32a7b34a6185deda.jpg?v=1791381560 Calcipotriol, 98.90% | 112965-21-6 Calcipotriol|C4X-122234|112965-21-6 https://www.jk-sci.com/products/j5315290 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7cd687c34474fa8379ac468b801872de.jpg?v=1791413114 2-Methyl-D-b-homophenylalanine hydrochloride, Purity ≥ 98% | 269398-79-0 2-Methyl-D-b-homophenylalanine hydrochloride|15290|269398-79-0 https://www.jk-sci.com/products/s57c4x-122326 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_671f6be1-b87e-454d-b6c5-a05dfc43758d.png?v=1791381546 Netupitant Impurity 26, 98.50% Netupitant Impurity 26|C4X-122326 https://www.jk-sci.com/products/j5315322 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/864fe876aa9dd50e68ed49fbc1896227.jpg?v=1791413074 Fmoc-4-cyano-D-b-homophenylalanine, Purity by HPLC ≥ 98% | 269726-87-6 Fmoc-4-cyano-D-b-homophenylalanine|15322|269726-87-6 https://www.jk-sci.com/products/j5315311 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/278df4ed0d1756c61df139bb5328b5bd.jpg?v=1791413090 4-Trifluoromethyl-D-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 269726-76-3 4-Trifluoromethyl-D-b-homophenylalanine hydrochloride|15311|269726-76-3 https://www.jk-sci.com/products/s57c4x-12253 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/06d26c03d2fb4d92f158684758ca7201.jpg?v=1791381525 Trimethoprim EP Impurity C, 99.00% | 29606-06-2 Trimethoprim EP Impurity C|C4X-12253|29606-06-2 https://www.jk-sci.com/products/s57c4x-12269 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c2e1d1e5d437c26386b6007eb1a0a823.jpg?v=1791381507 Nor Doxepin-d3 Hydrochloride, Purity>95% | 1331665-54-3 Nor Doxepin-d3 Hydrochloride|C4X-12269|1331665-54-3 https://www.jk-sci.com/products/s57c4x-122426 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/acae1f527ee0056e92a52ce2e0494174.jpg?v=1791381534 Cefadroxil Impurity 26, 95.80% | 147103-94-4 Cefadroxil Impurity 26|C4X-122426|147103-94-4 https://www.jk-sci.com/products/j5315317 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5cc3c17dbd5a7a7307d235f7c8e1a373.jpg?v=1791413080 3-Cyano-D-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 269726-82-1 3-Cyano-D-b-homophenylalanine hydrochloride|15317|269726-82-1 https://www.jk-sci.com/products/s57c4x-12259 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/209a4c7b26a3822b66b3acc9dc34fb6c.jpg?v=1791381519 Trimethoprim EP Impurity I(Mixture of cis/trans isomers), 99.90% | 30078-48-9 Trimethoprim EP Impurity I(Mixture of cis/trans isomers)|C4X-12259|30078-48-9 https://www.jk-sci.com/products/s57c4x-12277 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/590945_6c9875f5-3149-47a1-855d-4eab09d30714.png?v=1791381501 Oxybuprocaine Hydrochloride, 99.90% | 5987-82-6 Oxybuprocaine Hydrochloride|C4X-12277|5987-82-6 https://www.jk-sci.com/products/j5315327 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/feade1342dbd3eb1a90f6a91c8fee00f.jpg?v=1791413065 (R)-3-Amino-3-phenylpropionic acid, Assay ≥ 99% | 83649-48-3 (R)-3-Amino-3-phenylpropionic acid|15327|83649-48-3 https://www.jk-sci.com/products/j5315350 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c6209c615fc29967152df2f379f51a5e.jpg?v=1791413040 Fmoc-(1-naphthyl)-L-b-homoalanine, Purity ≥ 98% | 270063-38-2 Fmoc-(1-naphthyl)-L-b-homoalanine|15350|270063-38-2 https://www.jk-sci.com/products/s57c4x-123015 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f0812105294c7f40900b2ab980f52c7d.jpg?v=1791381486 Dexmedetomidine Impurity 15, 99.80% | 2250242-52-3 Dexmedetomidine Impurity 15|C4X-123015|2250242-52-3 https://www.jk-sci.com/products/s57c4x-123024 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0f2930f8-3252-4881-9629-3e7762a6997b.png?v=1791381476 Dexmedetomidine Impurity 24, Purity: 99.0% Dexmedetomidine Impurity 24|C4X-123024 https://www.jk-sci.com/products/j5315356 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/37b4d3c46abb7a48fe866cfafbed6a31.jpg?v=1791413035 L-b-HomoAla(3-benzothienyl)-OH·HCl | 270063-44-0 L-b-HomoAla(3-benzothienyl)-OH·HCl|15356|270063-44-0 https://www.jk-sci.com/products/s57c4x-123032 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/682541a4d5dfa91975f8bf996688d087.jpg?v=1791381469 Detomidine Hydrochloride, 92.00% | 90038-01-0 Detomidine Hydrochloride|C4X-123032|90038-01-0 https://www.jk-sci.com/products/s57c4x-123425 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/203573_9416e3b5-1942-4b2d-9a19-910c6bf5f2de.png?v=1791381409 Candesartan Cilexetil Impurity 25, 99.80% | 99464-83-2 Candesartan Cilexetil Impurity 25|C4X-123425|99464-83-2 https://www.jk-sci.com/products/j5315384 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f8c6985f7664dc136d3a954286cc872c.jpg?v=1791412999 2-Cyano-L-b-homophenylalanine hydrochloride | 270065-82-2 2-Cyano-L-b-homophenylalanine hydrochloride|15384|270065-82-2 https://www.jk-sci.com/products/s57c4x-123221 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d4d7c619605f514e25c2a1a684751242.jpg?v=1791381438 Emtricitabine Impurity 21, 99.80% | 145986-11-4 Emtricitabine Impurity 21|C4X-123221|145986-11-4 https://www.jk-sci.com/products/s57c4x-12306 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cf4860a43df9f2d4715cebf62c403b62.jpg?v=1791381453 Dexmedetomidine Impurity 6, 99.80% | 91874-85-0 Dexmedetomidine Impurity 6|C4X-12306|91874-85-0 https://www.jk-sci.com/products/j5315425 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/294e35dd25fdabb0e456a2c58a88accf.jpg?v=1791412949 Boc-3-fluoro-L-b-homophenylalanine, Purity ≥ 98% | 270596-51-5 Boc-3-fluoro-L-b-homophenylalanine|15425|270596-51-5 https://www.jk-sci.com/products/j5315374 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f4a77d8da918a8b10f22023ea03e193d.jpg?v=1791413009 Fmoc-4-iodo-L-b-homophenylalanine, Purity by HPLC ≥ 98% | 270065-72-0 Fmoc-4-iodo-L-b-homophenylalanine|15374|270065-72-0 https://www.jk-sci.com/products/s57c4x-123319 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_18ada9aa-dd6d-429a-b5d0-2fe0c45b1a29.png?v=1791381426 Tamoxifen impurity 19, 99.20% Tamoxifen impurity 19|C4X-123319 https://www.jk-sci.com/products/s57c4x-123049 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/09be43e19ec2d2b3924ec5f1875d141d.jpg?v=1791381462 Dexmedetomidine Impurity 49, 99.70% | 2250243-24-2 Dexmedetomidine Impurity 49|C4X-123049|2250243-24-2 https://www.jk-sci.com/products/s57c4x-123413 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/de8549c8257b0e5112bd57cbe70d1071.jpg?v=1791381419 Candesartan Cilexetil EP Impurity E, 99.90% | 914613-35-7 Candesartan Cilexetil EP Impurity E|C4X-123413|914613-35-7 https://www.jk-sci.com/products/s57c4x-12347 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/240626_3203d1e9-7ecb-45d5-9215-8657acde1c01.png?v=1791381399 Candesartan Cilexetil EP Impurity G(Candesartan), 96.50% | 139481-59-7 Candesartan Cilexetil EP Impurity G(Candesartan)|C4X-12347|139481-59-7 https://www.jk-sci.com/products/s57c4x-12308 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_d84b1553-7264-4c1c-8f78-4a0ea912897e.png?v=1791381448 Dexmedetomidine Impurity 8, 97.80% Dexmedetomidine Impurity 8|C4X-12308 https://www.jk-sci.com/products/j5315448 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2624d6d641e8b2aa5f726ba9a14d191a.jpg?v=1791412919 Boc-(R)-3-amino-3-(4-chlorophenyl)propionic acid, Purity by HPLC ≥ 99% | 479064-93-2 Boc-(R)-3-amino-3-(4-chlorophenyl)propionic acid|15448|479064-93-2 https://www.jk-sci.com/products/j5315431 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/344d3f21ea77a2bb8846e1b247eb9b0a.jpg?v=1791412940 (S)-3-Amino-3-(1-naphthyl)propionic acid | 275826-46-5 (S)-3-Amino-3-(1-naphthyl)propionic acid|15431|275826-46-5 https://www.jk-sci.com/products/s57c4x-123520 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5c90d97bbfc34ac935d5bedbc60b0048.jpg?v=1791381380 Piracetam Impurity 20, 95.60% | 94359-90-7 Piracetam Impurity 20|C4X-123520|94359-90-7 https://www.jk-sci.com/products/j5315470 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e028fb6a48677b09e4b551059744996.jpg?v=1791412896 (R)-a-(2-Naphthalenylmethyl)proline·HCl, Purity ≥ 98% | 679796-42-0 (R)-a-(2-Naphthalenylmethyl)proline·HCl|15470|679796-42-0 https://www.jk-sci.com/products/s57c4x-123510 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5fe4882712c6752fb1aefa1672ef55c7.jpg?v=1791381388 Piracetam Impurity 10, 95.30% | 220223-43-8 Piracetam Impurity 10|C4X-123510|220223-43-8 https://www.jk-sci.com/products/a01951566 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/598d789249c94e4edfd7ebe0ba921be8.jpg?v=1788913196 4,5,6,7-Tetrahydrobenzo[c]isoxazole-3-carboxylic acid, 98% | 261350-47-4 4,5,6,7-Tetrahydrobenzo[c]isoxazole-3-carboxylic acid, 98%|951566|261350-47-4 https://www.jk-sci.com/products/s57c4x-123532 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_62143d33-a14e-4d85-b6aa-65ad815c1c48.png?v=1791381370 Piracetam impurity 32 HCl, 85.40% Piracetam impurity 32 HCl|C4X-123532 https://www.jk-sci.com/products/j5315501 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b076ab2b16ee023e37b3a7cd2721835e.jpg?v=1791412866 Boc-3-chloro-D-b-homophenylalanine, Purity by HPLC ≥ 99% | 331763-56-5 Boc-3-chloro-D-b-homophenylalanine|15501|331763-56-5 https://www.jk-sci.com/products/j5315512 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/14b3edc11b122ea1e037636ffca56ee2.jpg?v=1791412847 2-Bromo-L-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 403661-76-7 2-Bromo-L-b-homophenylalanine hydrochloride|15512|403661-76-7 https://www.jk-sci.com/products/j5311955 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1678b0f71ddae393a19649dfbba53aa1.jpg?v=1791414601 Fmoc-cis-1,4-aminocyclohexyl acetic acid, Assay by titration 98 - 101% || Chiral HPLC ≥ 99.7% (ee) || Purity by HPLC ≥ 99% | 1217675-84-7 Fmoc-cis-1,4-aminocyclohexyl acetic acid|11955|1217675-84-7 https://www.jk-sci.com/products/j5312846 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c10b1aa3c95a1e3d134644b5bbae7d55.jpg?v=1791414106 Fmoc-2-methyl-D-phenylalanine, Chiral HPLC ≥ 99.5% (ee) || Purity by HPLC ≥ 99% | 352351-63-4 Fmoc-2-methyl-D-phenylalanine|12846|352351-63-4 https://www.jk-sci.com/products/j5314213 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_65f24c47-0cc2-4463-a821-efa354c6349b.png?v=1791413855 Proteinase K from Tritirachium album [EC 3.4.21.64], Assay ≥ 99% | 39450-01-6 Proteinase K from Tritirachium album [EC 3.4.21.64]|14213|39450-01-6 https://www.jk-sci.com/products/j5314430 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5fe3fa077b9624f8776037d10964176d.jpg?v=1791413689 4-Methoxy-2-pentanol, Purity by GC ≥ 99% | 90971-84-9 4-Methoxy-2-pentanol|14430|90971-84-9 https://www.jk-sci.com/products/s57c4x-1236 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1397fa2679c22f4eb84ce6c64bbff2c9.jpg?v=1791381361 Isavuconazole, 97.00% | 241479-67-4 Isavuconazole|C4X-1236|241479-67-4 https://www.jk-sci.com/products/s57c4x-1236108 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_187fa4a9-65bf-4e29-98c8-e89bd775a4d2.png?v=1791381347 Isavuconazole Impurity 108, 99.50% Isavuconazole Impurity 108|C4X-1236108 https://www.jk-sci.com/products/s57c4x-1236128 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0885a9f8-a59d-4542-adb9-0e20c25fc319.png?v=1791381344 Isavuconazole Impurity 128, 97.20% Isavuconazole Impurity 128|C4X-1236128 https://www.jk-sci.com/products/s57c4x-123620 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8e49cda8224efcaa79ac36fc584dcdc7.jpg?v=1791381333 Isavuconazole Impurity 20, 98.60% | 2170932-49-5 Isavuconazole Impurity 20|C4X-123620|2170932-49-5 https://www.jk-sci.com/products/j5315033 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4e8efc299b470d22297b916c62480bb8.jpg?v=1791413450 trans-4-(Boc-amino)-cyclohexane-methanamine hydrochloride, Purity by HPLC ≥ 98% | 874823-37-7 trans-4-(Boc-amino)-cyclohexane-methanamine hydrochloride|15033|874823-37-7 https://www.jk-sci.com/products/j5314827 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e417f60b9f7b6e7ac8b07e50379c412a.jpg?v=1791413555 Na-Fmoc-Nw-bis-carbobenzoxy-L-arginine, Purity by HPLC ≥ 98% | 207857-35-0 Na-Fmoc-Nw-bis-carbobenzoxy-L-arginine|14827|207857-35-0 https://www.jk-sci.com/products/s57c4x-123624 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/754fb56dd591d005ced63e4f470795d8.jpg?v=1791381326 Isavuconazole Impurity 24, 99.60% | 1176988-44-5 Isavuconazole Impurity 24|C4X-123624|1176988-44-5 https://www.jk-sci.com/products/j5315071 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/31eb2ebdbd9ace7e9c5bbc90703b22ea.jpg?v=1791413393 4-[2-(Fmoc-amino)ethyloxy]benzoic acid, Purity by HPLC ≥ 99% | 882847-29-2 4-[2-(Fmoc-amino)ethyloxy]benzoic acid|15071|882847-29-2 https://www.jk-sci.com/products/s57c4x-123626 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_d1eb5640-9e8e-4751-a28d-1e2e6c5075a7.png?v=1791381321 Isavuconazole Impurity 26, 99.80% Isavuconazole Impurity 26|C4X-123626 https://www.jk-sci.com/products/j5315123 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/881c08402c655e6860109acf269563aa.jpg?v=1791413290 Fmoc-3-nitro-L-phenylalanine, Assay ≥ 99% | 206060-42-6 Fmoc-3-nitro-L-phenylalanine|15123|206060-42-6 https://www.jk-sci.com/products/j5315219 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5b6c1c2f1dd833842f5840b70f5d823b.jpg?v=1791413209 (S)-3-Amino-3-(4-fluorophenyl)propionic acid, Purity by HPLC ≥ 98% | 151911-33-0 (S)-3-Amino-3-(4-fluorophenyl)propionic acid|15219|151911-33-0 https://www.jk-sci.com/products/s57c4x-123628 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_25586ead-7a6b-499e-ac0e-459c6b620a7d.png?v=1791381320 Isavuconazole Impurity 28, Purity: 96.7% Isavuconazole Impurity 28|C4X-123628 https://www.jk-sci.com/products/j5315270 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3bbe9486b4a720f56a974f95101ea466.jpg?v=1791413132 Boc-2,4-dichloro-D-b-homophenylalanine, Purity by HPLC ≥ 99% | 269396-53-4 Boc-2,4-dichloro-D-b-homophenylalanine|15270|269396-53-4 https://www.jk-sci.com/products/s57c4x-12363 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3194e39c4b239bcf37b89d5f9b2d8b39.jpg?v=1791381307 Isavuconazole Impurity 3, 98.40% | 2734004-61-4 Isavuconazole Impurity 3|C4X-12363|2734004-61-4 https://www.jk-sci.com/products/s57c4x-123642 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_7851e8ad-7b95-48bc-93fa-3ea1901d0146.png?v=1791381297 Isavuconazole Impurity 42 Chloride DiHCl (Mixture of Diastereomers), 84.50% Isavuconazole Impurity 42 Chloride DiHCl (Mixture of Diastereomers)|C4X-123642 https://www.jk-sci.com/products/s57c4x-123632 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ba516de49cb8cb56363aa30d3b2e129c.jpg?v=1791381305 Isavuconazole Impurity 32, 95.50% | 338990-31-1 Isavuconazole Impurity 32|C4X-123632|338990-31-1 https://www.jk-sci.com/products/s57c4x-123637 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_de6d91d8-9efe-4d8e-85a0-5ab2b35f44b7.png?v=1791381299 Isavuconazole Impurity 37 Chloride DiHCl (Mixture of Diastereomers), 81.10% Isavuconazole Impurity 37 Chloride DiHCl (Mixture of Diastereomers)|C4X-123637 https://www.jk-sci.com/products/a01952177 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/446800.png?v=1790205760 1-Bromo-4-nonylbenzene, 98% | 51554-94-0 1-Bromo-4-nonylbenzene, 98%|952177|51554-94-0 https://www.jk-sci.com/products/s57c4x-123655 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/87373aaf7531b66f3724ec2d7bb2d30d.jpg?v=1791381294 Isavuconazonium Sulfate, 91.70% | 946075-13-4 Isavuconazonium Sulfate|C4X-123655|946075-13-4 https://www.jk-sci.com/products/a01952855 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/286660.png?v=1788913158 5-Bromo-2-methylindole, 97% | 1075-34-9 5-Bromo-2-methylindole, 97%|952855|1075-34-9 https://www.jk-sci.com/products/s57c4x-123659 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_64e93a11-280f-4455-95ce-1dd397dc7ffa.png?v=1791381279 Isavuconazole Impurity 59, 72.20% Isavuconazole Impurity 59|C4X-123659 https://www.jk-sci.com/products/s57c4x-123664 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_d42dde53-5836-4e1a-bae0-7c9e2bf09af1.png?v=1791381273 Isavuconazole Impurity 64 xTrifluoroacetate（Easy to absorb moisture）, Purity: 91.9% Isavuconazole Impurity 64 xTrifluoroacetate（Easy to absorb moisture）|C4X-123664 https://www.jk-sci.com/products/s57c4x-123673 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_ec07305d-5ceb-4a66-a97c-3653ccad3be3.png?v=1791381271 Isavuconazole Impurity 73, 96.70% Isavuconazole Impurity 73|C4X-123673 https://www.jk-sci.com/products/j5315308 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5ead4f91dcf9362bdee920ca96750010.jpg?v=1791413093 3-Trifluoromethyl-D-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 269726-73-0 3-Trifluoromethyl-D-b-homophenylalanine hydrochloride|15308|269726-73-0 https://www.jk-sci.com/products/s57c4x-123699 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_3c4be0c9-04e0-4356-a97d-47543c23101f.png?v=1791381249 Isavuconazole Impurity 99 Iodization HCl, 96.30% Isavuconazole Impurity 99 Iodization HCl|C4X-123699 https://www.jk-sci.com/products/s57c4x-123697 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_c429849e-3c4a-4538-9552-e166b96965b9.png?v=1791381255 Isavuconazole impurity 97, 72.80% Isavuconazole impurity 97|C4X-123697 https://www.jk-sci.com/products/j5315319 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dfc238f38590ddcc232d10dade5f7ebc.jpg?v=1791413076 Fmoc-3-cyano-D-b-homophenylalanine, Purity by HPLC ≥ 98% | 269726-84-3 Fmoc-3-cyano-D-b-homophenylalanine|15319|269726-84-3 https://www.jk-sci.com/products/s57c4x-123686 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/85fed1510b4cd1f3c3c67353e2ccfd99.jpg?v=1791381262 Isavuconazole Impurity 86, Purity: 98.2% | 40805-50-3 Isavuconazole Impurity 86|C4X-123686|40805-50-3 https://www.jk-sci.com/products/j5315338 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8790f3c57bc1b7da08f7b775f759d59a.jpg?v=1791413049 2-Methyl-L-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 270062-89-0 2-Methyl-L-b-homophenylalanine hydrochloride|15338|270062-89-0 https://www.jk-sci.com/products/j5315373 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4e8c19a35d35f16418daeebc8ec37a99.jpg?v=1791413013 Boc-4-iodo-L-b-homophenylalanine, Purity by HPLC ≥ 98% | 270065-71-9 Boc-4-iodo-L-b-homophenylalanine|15373|270065-71-9 https://www.jk-sci.com/products/s57c4x-123715 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5e8d91b60d2d0778c8a11c225c608b2e.jpg?v=1791381240 Picosulfate Impurity 15, 96.30% | 16985-07-2 Picosulfate Impurity 15|C4X-123715|16985-07-2 https://www.jk-sci.com/products/s57c4x-123710 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dc6e781b6bc22e420b9ce282081f0821.jpg?v=1791381245 Picosulfate Impurity 10, 97.60% | 33077-70-2 Picosulfate Impurity 10|C4X-123710|33077-70-2 https://www.jk-sci.com/products/s57c4x-12372 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/240df0f717fbf2c00f7c8d442753227d_e818d2ae-c720-483a-8dc6-09c21c1b0b23.jpg?v=1791381239 Sodium Picosulfate EP Impurity B, 99.70% | 603-41-8 Sodium Picosulfate EP Impurity B|C4X-12372|603-41-8 https://www.jk-sci.com/products/s57c4x-12374 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_27cfcfe4-bc75-4889-93bd-17a922f9460d.png?v=1791381233 Picosulfate Impurity 4, 94.80% Picosulfate Impurity 4|C4X-12374 https://www.jk-sci.com/products/j5315387 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3a9b1994595d89893f32c6471304f944.jpg?v=1791412996 3-Cyano-L-b-homophenylalanine hydrochloride | 270065-85-5 3-Cyano-L-b-homophenylalanine hydrochloride|15387|270065-85-5 https://www.jk-sci.com/products/j5315440 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0ddb690ece0e1487f9602b81d0d97c12.jpg?v=1791412930 Pentafluoro-D-phenylalanine, Purity ≥ 98% | 40332-58-9 Pentafluoro-D-phenylalanine|15440|40332-58-9 https://www.jk-sci.com/products/j5315540 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/13683156062f022ff5139f52c573b388.jpg?v=1791412820 Boc-(S)-3-amino-3-(2-fluorophenyl)propionic acid, Purity by HPLC ≥ 98% | 500770-71-8 Boc-(S)-3-amino-3-(2-fluorophenyl)propionic acid|15540|500770-71-8 https://www.jk-sci.com/products/j5315487 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0a6dff0987c8ff2142f0caad558a6089.jpg?v=1791412886 (+)-(1S,3R)-3-Amino-cyclopentane carboxylic acid, Purity by HPLC ≥ 98% | 71830-07-4 (+)-(1S,3R)-3-Amino-cyclopentane carboxylic acid|15487|71830-07-4 https://www.jk-sci.com/products/a01953568 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/576109_bfe215e7-0918-4fbd-b6c7-2a0ac2effab0.png?v=1790205736 4-Acetylbenzonitrile, 97% | 1443-80-7 4-Acetylbenzonitrile, 97%|953568|1443-80-7 https://www.jk-sci.com/products/s57c4x-12381 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2327397a98dd635f9cb17900c24be070.jpg?v=1791381230 Zopiclone EP Impurity C, Purity: 99.4% | 148891-53-6 Zopiclone EP Impurity C|C4X-12381|148891-53-6 https://www.jk-sci.com/products/j5315544 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f3e4601691b342a250a9675506ff5bda.jpg?v=1791412816 (S)-3-Amino-3-(3-fluorophenyl)propionic acid, Purity by HPLC ≥ 95% | 723284-79-5 (S)-3-Amino-3-(3-fluorophenyl)propionic acid|15544|723284-79-5 https://www.jk-sci.com/products/j5315561 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fb3c067908225641fff57a0be741a885.jpg?v=1791412793 Boc-(R)-3-amino-3-(2-bromophenyl)propionic acid, Purity by HPLC ≥ 98% | 500789-07-1 Boc-(R)-3-amino-3-(2-bromophenyl)propionic acid|15561|500789-07-1 https://www.jk-sci.com/products/s57c4x-123816 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/47137ec3f4e85d7dcf2031d4b4be7229.jpg?v=1791381224 Zopiclone Impurity 16, 98.70% | 59325-11-0 Zopiclone Impurity 16|C4X-123816|59325-11-0 https://www.jk-sci.com/products/a01953749 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/143623.png?v=1788913137 2,6-Dimethoxybenzaldehyde, 98% | 3392-97-0 2,6-Dimethoxybenzaldehyde, 98%|953749|3392-97-0 https://www.jk-sci.com/products/s57c4x-12384 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ae2b8236f9d1dd213ed190be5da8d658.jpg?v=1791381218 Zopiclone EP Impurity B, 99.70% | 43200-81-3 Zopiclone EP Impurity B|C4X-12384|43200-81-3 https://www.jk-sci.com/products/j5315573 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/da071f8542cffe980e89bdc7da8be3d9.jpg?v=1791412782 Boc-(R)-3-amino-3-(2-trifluoromethylphenyl)propionic acid, Purity by HPLC ≥ 97% | 501015-17-4 Boc-(R)-3-amino-3-(2-trifluoromethylphenyl)propionic acid|15573|501015-17-4 https://www.jk-sci.com/products/j5315590 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fc683daa4313f24e8f43585e3f39a606.jpg?v=1791412759 (S)-3-Amino-3-(3-cyanophenyl)propionic acid, Purity by HPLC ≥ 98% | 791778-00-2 (S)-3-Amino-3-(3-cyanophenyl)propionic acid|15590|791778-00-2 https://www.jk-sci.com/products/j5315570 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b3ae2a80f952f324a282b5b54dd0b510.jpg?v=1791412788 (R)-3-Amino-3-(4-bromophenyl)propionic acid, Purity ≥ 98% | 479074-63-0 (R)-3-Amino-3-(4-bromophenyl)propionic acid|15570|479074-63-0 https://www.jk-sci.com/products/j5315613 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ed622181a58b4568a115581b2c9166e4.jpg?v=1791412735 Boc-(R)-3-amino-3-(4-nitrophenyl)propionic acid, Purity by HPLC ≥ 99% | 500770-85-4 Boc-(R)-3-amino-3-(4-nitrophenyl)propionic acid|15613|500770-85-4 https://www.jk-sci.com/products/j5315617 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/96e48975c0bc28f2e9a141c576740de7.jpg?v=1791412731 (R)-3-Amino-3-(2-methylphenyl)propionic acid, Purity ≥ 98% | 752198-38-2 (R)-3-Amino-3-(2-methylphenyl)propionic acid|15617|752198-38-2 https://www.jk-sci.com/products/s57c4x-12391 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/329945.png?v=1791381212 Anastrozole EP Impurity H, 99.00% | 120511-72-0 Anastrozole EP Impurity H|C4X-12391|120511-72-0 https://www.jk-sci.com/products/j5315626 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/540b4be14f6ed14b40db7ac47fc5c00a.jpg?v=1791412722 Boc-(S)-3-amino-3-(3-methylphenyl)propionic acid, Purity by HPLC ≥ 98% | 499995-75-4 Boc-(S)-3-amino-3-(3-methylphenyl)propionic acid|15626|499995-75-4 https://www.jk-sci.com/products/s57c4x-123912 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/263251.png?v=1791381206 Anastrozole Impurity 12, 97.40% | 19294-04-3 Anastrozole Impurity 12|C4X-123912|19294-04-3 https://www.jk-sci.com/products/s57c4x-123915 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ae37be31bdd58d41c9b490dccc066f79.jpg?v=1791381206 Anastrozole Impurity 15, 96.30% | 2469244-33-3 Anastrozole Impurity 15|C4X-123915|2469244-33-3 https://www.jk-sci.com/products/s57c4x-123917 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eccba31391167f26eeec96e7589c3095.jpg?v=1791381199 Anastrozole Diacid, 95.50% | 1338800-81-9 Anastrozole Diacid|C4X-123917|1338800-81-9 https://www.jk-sci.com/products/j5315639 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d43e2d2d8c5e05335a984d74a8659ade.jpg?v=1791412708 Boc-(R)-3-amino-3-(3-methoxyphenyl)propionic acid, Purity by HPLC ≥ 98% | 500788-86-3 Boc-(R)-3-amino-3-(3-methoxyphenyl)propionic acid|15639|500788-86-3 https://www.jk-sci.com/products/s57c4x-12394 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/245854_fa96c2cf-2a80-42c2-8e73-85236cc364ee.png?v=1791381194 Anastrozole EP Impurity C, 95.60% | 120511-84-4 Anastrozole EP Impurity C|C4X-12394|120511-84-4 https://www.jk-sci.com/products/j5315647 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3dcc66e067a466a590abac3cf5dfed38.jpg?v=1791412693 (R)-3-Amino-3-(2-hydroxyphenyl)propionic acid | 708973-31-3 (R)-3-Amino-3-(2-hydroxyphenyl)propionic acid|15647|708973-31-3 https://www.jk-sci.com/products/s57c4x-12397 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e29090523148f47ff12273bc71a91cf9.jpg?v=1791381193 Anastrozole EP Impurity G, 98.80% | 120511-92-4 Anastrozole EP Impurity G|C4X-12397|120511-92-4 https://www.jk-sci.com/products/j5315659 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/295781a3e9a57008e8ecb49afcc73d56.jpg?v=1791412680 Boc-(S)-3-amino-3-(4-hydroxyphenyl)propionic acid, Purity by HPLC ≥ 96% | 499995-80-1 Boc-(S)-3-amino-3-(4-hydroxyphenyl)propionic acid|15659|499995-80-1 https://www.jk-sci.com/products/j5315675 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f5f780e5e0a4a0c8658af4721c2f1674.jpg?v=1791412665 (S)-3-Amino-3-(2,3-dimethoxyphenyl)propionic acid, Purity by HPLC ≥ 98% | 752198-18-8 (S)-3-Amino-3-(2,3-dimethoxyphenyl)propionic acid|15675|752198-18-8 https://www.jk-sci.com/products/s57c4x-1240 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/53431c6e810de240873bea4e544cd165.jpg?v=1791381188 Ziprasidone Hydrochloride Monohydrate, 99.50% | 138982-67-9 Ziprasidone Hydrochloride Monohydrate|C4X-1240|138982-67-9 https://www.jk-sci.com/products/s57c4x-124016 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d3438d7e999895b32de5633781febd11.jpg?v=1791381179 Ziprasidone HCl, 93.10% | 122883-93-6 Ziprasidone HCl|C4X-124016|122883-93-6 https://www.jk-sci.com/products/s57c4x-124011 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/468a68bf1a1bef1d0e68845ec2d98768.jpg?v=1791381185 Ziprasidone Impurity 11, Purity: 97.0% | 188797-76-4 Ziprasidone Impurity 11|C4X-124011|188797-76-4 https://www.jk-sci.com/products/j5315690 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cba4fb8ac2e2430dfe2b077a125dd693.jpg?v=1791412660 Fmoc-(R)-3-amino-3-(3,5-dimethoxyphenyl)propionic acid, Chiral HPLC ≥ 99% (ee) || Purity by HPLC ≥ 99% | 511272-41-6 Fmoc-(R)-3-amino-3-(3,5-dimethoxyphenyl)propionic acid|15690|511272-41-6 https://www.jk-sci.com/products/s57c4x-124026 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/543996.png?v=1791381179 Ziprasidone Impurity 26, 95.30% | 118307-04-3 Ziprasidone Impurity 26|C4X-124026|118307-04-3 https://www.jk-sci.com/products/j5315701 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7e617ce222253c2ebf3c768ce8f4133a.jpg?v=1791412646 Boc-(R)-3-amino-3-(3-thienyl)propionic acid, Purity by HPLC ≥ 97% | 500788-99-8 Boc-(R)-3-amino-3-(3-thienyl)propionic acid|15701|500788-99-8 https://www.jk-sci.com/products/j5315708 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3d9629cb6fcc768ce4f506bb170d856c.jpg?v=1791412642 Fmoc-(R)-3-amino-3-(1-naphthyl)propionic acid, Chiral HPLC ≥ 99.5% (ee) || Purity by HPLC ≥ 99% | 511272-47-2 Fmoc-(R)-3-amino-3-(1-naphthyl)propionic acid|15708|511272-47-2 https://www.jk-sci.com/products/s57c4x-12404 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/613786.png?v=1791381174 Ziprasidone EP Impurity A, 99.70% | 87691-87-0 Ziprasidone EP Impurity A|C4X-12404|87691-87-0 https://www.jk-sci.com/products/j5315712 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ae0dea7619c375aad3bc0fe60cc9840c.jpg?v=1791412633 Boc-(R)-3-amino-3-(2-naphthyl)propionic acid, Purity by HPLC ≥ 98% | 500789-01-5 Boc-(R)-3-amino-3-(2-naphthyl)propionic acid|15712|500789-01-5 https://www.jk-sci.com/products/j5315717 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e7880d25a65ca13a4f8f5592c253893c.jpg?v=1791412628 Boc-(R)-3-amino-3-(2-furyl)propionic acid, Purity by HPLC ≥ 99% | 1217725-33-1 Boc-(R)-3-amino-3-(2-furyl)propionic acid|15717|1217725-33-1 https://www.jk-sci.com/products/s57c4x-12407 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e09fda43c9193b72010eee9b08b8d691.jpg?v=1791381166 Ziprasidone EP Impurity D, 90.00% | 1303996-68-0 Ziprasidone EP Impurity D|C4X-12407|1303996-68-0 https://www.jk-sci.com/products/j5315734 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/78c119a71cca74b7060bf623a842f7dc.jpg?v=1791412605 L-2-Amino-5-phenylpentanoic acid, Purity by HPLC ≥ 99% | 62777-25-7 L-2-Amino-5-phenylpentanoic acid|15734|62777-25-7 https://www.jk-sci.com/products/j5315833 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/49322e5baff12c36a75d53188e8fabe0.jpg?v=1791412570 (R)-a-(3-Phenylpropyl)proline·HCl, Purity by HPLC ≥ 98% | 1217792-29-4 (R)-a-(3-Phenylpropyl)proline·HCl|15833|1217792-29-4 https://www.jk-sci.com/products/j5315864 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/5189a1836c58a6d8b1bff15e8f5b7ab4.jpg?v=1791412566 Boc-(R)-a-(3-thiophenylmethyl)proline, Purity by HPLC 99 - 100% | 959578-37-1 Boc-(R)-a-(3-thiophenylmethyl)proline|15864|959578-37-1 https://www.jk-sci.com/products/s57c4x-12409 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/543519.png?v=1791381164 Ziprasidone Impurity 9, 99.30% | 118289-55-7 Ziprasidone Impurity 9|C4X-12409|118289-55-7 https://www.jk-sci.com/products/s57c4x-124124 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/154680_1d10f4c1-3362-43bc-8ccc-3dad57acbcdd.png?v=1791381161 Minodronic Impurity 24, 91.30% | 2960-66-9 Minodronic Impurity 24|C4X-124124|2960-66-9 https://www.jk-sci.com/products/s57c4x-12421 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/cab8843bdc02a71b40b1168f6948d6a5.jpg?v=1791381157 Rocuronium EP Impurity A, 99.60% | 119302-24-8 Rocuronium EP Impurity A|C4X-12421|119302-24-8 https://www.jk-sci.com/products/s57c4x-124215 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ef1bf7484ffac1c1b9bbb42ffa6005a3.jpg?v=1791381157 Rocuronium Impurity 15, 99.10% | 10429-07-9 Rocuronium Impurity 15|C4X-124215|10429-07-9 https://www.jk-sci.com/products/j5315883 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/96ed2fe17ece898052ea38629ff00b43.jpg?v=1791412560 (R)-a-Allylproline·HCl, Purity by HPLC ≥ 98% | 177206-69-8 (R)-a-Allylproline·HCl|15883|177206-69-8 https://www.jk-sci.com/products/s57c4x-124218 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_860ffd4d-164e-4af0-a217-f39e1cfa8a6e.png?v=1791381147 Rocuronium Impurity 18, 97.50% Rocuronium Impurity 18|C4X-124218 https://www.jk-sci.com/products/s57c4x-124224 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a7d445a8c4471167bcd4c850ca5ab5b5.jpg?v=1791381149 Rocuronium Bromide Impurity 24, 93.70% | 119302-19-1 Rocuronium Bromide Impurity 24|C4X-124224|119302-19-1 https://www.jk-sci.com/products/j5315902 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2a4e571965f4ebc2b7867a99e6b8c57d.jpg?v=1791412540 Boc-(R)-g-(3-chlorobenzyl)-L-proline, Purity by HPLC ≥ 97% | 959576-36-4 Boc-(R)-g-(3-chlorobenzyl)-L-proline|15902|959576-36-4 https://www.jk-sci.com/products/s57c4x-12424 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dfaa7fdd1628ffc1f9cbb1753649ec1d.jpg?v=1791381142 Rocuronium EP Impurity D, 97.80% | 1190105-63-5 Rocuronium EP Impurity D|C4X-12424|1190105-63-5 https://www.jk-sci.com/products/j5315913 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/dd3ae108621f1c18cb9633ed6fa9ac79.jpg?v=1791412530 (R)-g-(3-Methylbenzyl)-L-proline·HCl | 1049734-52-2 (R)-g-(3-Methylbenzyl)-L-proline·HCl|15913|1049734-52-2 https://www.jk-sci.com/products/j5309702 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/157fc21084f13049a2ad1ecc8990b590.jpg?v=1791415209 Phenylacetyl glycine, Assay by titration ≥ 99.5% || Purity by HPLC ≥ 99% | 500-98-1 Phenylacetyl glycine|09702|500-98-1 https://www.jk-sci.com/products/s57c4x-12425 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6c1aa2f80a069ecaf05eaf7f25c3ce30.jpg?v=1791381137 Rocuronium EP Impurity E, 90.40% | 1190105-65-7 Rocuronium EP Impurity E|C4X-12425|1190105-65-7 https://www.jk-sci.com/products/s57c4x-12428 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/78fbf9c35d598607e66a9f50263d6ef1.jpg?v=1791381137 Rocuronium EP Impurity H, 87.30% | 1190105-67-9 Rocuronium EP Impurity H|C4X-12428|1190105-67-9 https://www.jk-sci.com/products/s57c4x-124335 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6ee58e3383f8dabbeb06acf6ac3f2603.jpg?v=1791381132 Efinaconazole Impurity 35, Purity: 95.8% | 127001-03-0 Efinaconazole Impurity 35|C4X-124335|127001-03-0 https://www.jk-sci.com/products/j5312971 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/95a26ad03888804fbcc90a519dd8f6a1.jpg?v=1791413998 4-Hydroxy-3-methoxybenzyl alcohol, Purity by GC ≥ 98% | 498-00-0 4-Hydroxy-3-methoxybenzyl alcohol|12971|498-00-0 https://www.jk-sci.com/products/s57c4x-124414 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/460615.png?v=1791381120 Quetiapine EP Impurity G, 99.50% | 3159-07-7 Quetiapine EP Impurity G|C4X-124414|3159-07-7 https://www.jk-sci.com/products/s57c4x-124412 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/8816d20107d759143e328be724e25ab0.jpg?v=1791381126 Quetiapine EP Impurity F, 95.20% | 848814-27-7 Quetiapine EP Impurity F|C4X-124412|848814-27-7 https://www.jk-sci.com/products/s57c4x-124423 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b09b2252a983cd549d906923b5e6ab52.jpg?v=1791381109 Quetiapine EP Impurity E, Purity: 92.3% | 1371638-05-9 Quetiapine EP Impurity E|C4X-124423|1371638-05-9 https://www.jk-sci.com/products/s57c4x-124416 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1103ad622a4e4bdc08d04ec55863ee66.jpg?v=1791381115 Quetiapine EP Impurity T, 99.50% | 5747-46-6 Quetiapine EP Impurity T|C4X-124416|5747-46-6 https://www.jk-sci.com/products/s57c4x-12442 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0cbf8381c40e6cd993c0ee9176954fd6_0830517e-fa50-4a3c-bc93-bdddd6ae36fa.jpg?v=1791381111 Quetiapine EP Impurity I, Purity: 99.2% | 329216-67-3 Quetiapine EP Impurity I|C4X-12442|329216-67-3 https://www.jk-sci.com/products/s57c4x-124425 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/71f3ab64210a19aa0d1fdda66851ea31.jpg?v=1791381105 Quetiapine EP Impurity O, Purity: 98.9% | 844639-06-1 Quetiapine EP Impurity O|C4X-124425|844639-06-1 https://www.jk-sci.com/products/s57c4x-124432 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/82a4bd3357e81d587fc74f45d76ac317.jpg?v=1791381101 Quetiapine Impurity 32, Purity: 99.1% | 13745-86-3 Quetiapine Impurity 32|C4X-124432|13745-86-3 https://www.jk-sci.com/products/j5314487 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/bd256f901815694882cd9b82f6dbbd3e.jpg?v=1791413610 (R)-Fmoc-3-carboxythiomorpholine, Purity by HPLC ≥ 99% | 959572-96-4 (R)-Fmoc-3-carboxythiomorpholine|14487|959572-96-4 https://www.jk-sci.com/products/s57c4x-124454 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/232633.png?v=1791381085 Quetiapine Impurity 54, 100.00% | 4171-83-9 Quetiapine Impurity 54|C4X-124454|4171-83-9 https://www.jk-sci.com/products/j5315059 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/21b5dc43b4d0e5984cb31e7c26adab72.jpg?v=1791413410 Fmoc-(R,S)-3-amino-3-phenylpropionic acid, Purity by HPLC ≥ 99% | 180181-93-5 Fmoc-(R,S)-3-amino-3-phenylpropionic acid|15059|180181-93-5 https://www.jk-sci.com/products/s57c4x-124441 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/4db6714114f9a5cceadc96caf51e3d98.jpg?v=1791381091 Quetiapine EP Impurity P, 99.20% | 1011758-03-4 Quetiapine EP Impurity P|C4X-124441|1011758-03-4 https://www.jk-sci.com/products/s57c4x-124439 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0f304ae2-58f2-48ce-b307-dbe22262921a.png?v=1791381095 Quetiapine EP Impurity N triHCl, 96.10% Quetiapine EP Impurity N triHCl|C4X-124439 https://www.jk-sci.com/products/j5315167 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f99b242d4fcaed973db129bffada6f07.jpg?v=1791413241 Mezlocillin Sodium, Assay 838 - 978 ug/mg | 59798-30-0 Mezlocillin Sodium|15167|59798-30-0 https://www.jk-sci.com/products/j5315279 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2f169a0cb4650a3088ab3cdd4ee87a3f.jpg?v=1791413119 Boc-(3-pyridyl)-D-b-homoalanine, Purity by HPLC ≥ 99% | 269396-65-8 Boc-(3-pyridyl)-D-b-homoalanine|15279|269396-65-8 https://www.jk-sci.com/products/j5315323 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f02d1d0a67ed0e702fdf1323acaf9772.jpg?v=1791413070 (2-Thienyl)-D-b-homoalanine hydrochloride, Purity by HPLC ≥ 98% | 269726-88-7 (2-Thienyl)-D-b-homoalanine hydrochloride|15323|269726-88-7 https://www.jk-sci.com/products/j5315375 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/388f44e87bac3c1d95801fd64e03d175.jpg?v=1791413009 2-Trifluoromethyl-L-b-homophenylalanine hydrochloride, Purity by HPLC ≥ 98% | 270065-73-1 2-Trifluoromethyl-L-b-homophenylalanine hydrochloride|15375|270065-73-1 https://www.jk-sci.com/products/s57c4x-124456 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/473694_88e3aedc-2aee-405e-aa19-d2d902b0d254.png?v=1791381082 Quetiapine Impurity 56, 99.90% | 1015-89-0 Quetiapine Impurity 56|C4X-124456|1015-89-0 https://www.jk-sci.com/products/s57c4x-124459 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_0d2ea071-1fc3-4c8b-8dc1-38cb4f9e5c07.png?v=1791381077 Quetiapine Impurity 59, 96.10% Quetiapine Impurity 59|C4X-124459 https://www.jk-sci.com/products/s57c4x-1245 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/fe66f524066437bbb5b65b73501295f7.jpg?v=1791381055 Cefuroxime, 98.10% | 56238-63-2 Cefuroxime|C4X-1245|56238-63-2 https://www.jk-sci.com/products/s57c4x-124460 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/eade9a1e2bd1668093e9cdf4b5d0552d.jpg?v=1791381073 Quetiapine Impurity 60, Purity: 98.2% | 2204369-14-0 Quetiapine Impurity 60|C4X-124460|2204369-14-0 https://www.jk-sci.com/products/j5315462 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/d03026be9e224422aa14f089342e7e8a.jpg?v=1791412901 (R)-a-(3-Chlorobenzyl)proline·HCl, Purity by HPLC ≥ 98% | 637020-80-5 (R)-a-(3-Chlorobenzyl)proline·HCl|15462|637020-80-5 https://www.jk-sci.com/products/s57c4x-124464 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/161c897b51ef480cc5a7605ffb61bc4c.jpg?v=1791381069 Quetiapine impurity 64, 98.20% | 73486-81-4 Quetiapine impurity 64|C4X-124464|73486-81-4 https://www.jk-sci.com/products/s57c4x-124472 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_6e883a97-8560-4bb4-979d-eeff00045c56.png?v=1791381054 Quetiapine impurity 72, Purity: 98.7% Quetiapine impurity 72|C4X-124472 https://www.jk-sci.com/products/s57c4x-124468 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_e266f537-829b-472d-986c-61a23ddfd9c6.png?v=1791381068 Quetiapine Impurity 68, 99.70% Quetiapine Impurity 68|C4X-124468 https://www.jk-sci.com/products/j5315542 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/ea0fa6ff9b76226a2d07988b9c388a2c.jpg?v=1791412815 Fmoc-(S)-3-amino-3-(2-fluorophenyl)propionic acid, Purity by HPLC ≥ 99% | 507472-13-1 Fmoc-(S)-3-amino-3-(2-fluorophenyl)propionic acid|15542|507472-13-1 https://www.jk-sci.com/products/a01954849 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/337495.png?v=1790205714 2-(4-Chlorophenoxy)-2-methylpropionic acid, 98% | 882-09-7 2-(4-Chlorophenoxy)-2-methylpropionic acid, 98%|954849|882-09-7 https://www.jk-sci.com/products/s57c4x-12453 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3b0e8a95569a275ca12569d5db04ddff.jpg?v=1791381048 Cefuroxime Sodium EP Impurity C, 95.30% | 69822-88-4 Cefuroxime Sodium EP Impurity C|C4X-12453|69822-88-4 https://www.jk-sci.com/products/a01954984 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/273934.png?v=1788913089 N-Boc-1,6-diaminohexane, 97% | 51857-17-1 N-Boc-1,6-diaminohexane, 97%|954984|51857-17-1 https://www.jk-sci.com/products/j5315562 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0d4e2c8321fbf9b0c8f8ca0cb7fcd791.jpg?v=1791412792 Boc-(S)-3-amino-3-(2-bromophenyl)propionic acid, Purity by HPLC ≥ 97% | 500770-75-2 Boc-(S)-3-amino-3-(2-bromophenyl)propionic acid|15562|500770-75-2 https://www.jk-sci.com/products/s57c4x-12454 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/c970539654fd1b7ee7c3245c24f167f7.jpg?v=1791381043 Cefuroxime Sodium EP Impurity D, 90.50% | 76598-06-6 Cefuroxime Sodium EP Impurity D|C4X-12454|76598-06-6 https://www.jk-sci.com/products/s57c4x-12456 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/871cb9710e3bf52344d5649fcbd93b75.jpg?v=1791381031 Cefuroxime Sodium EP Impurity F, 91.00% | 97170-19-9 Cefuroxime Sodium EP Impurity F|C4X-12456|97170-19-9 https://www.jk-sci.com/products/s57c4x-12458 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e3be5d1a4550883b28d19590c34281fb.jpg?v=1791381026 Cefuroxime Sodium EP Impurity H(Cefuroxime Axetil EP Impurity E), 92.70% | 947723-87-7 Cefuroxime Sodium EP Impurity H(Cefuroxime Axetil EP Impurity E)|C4X-12458|947723-87-7 https://www.jk-sci.com/products/j5315579 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/7fdf1d25075b79f2ceff76f0c42981ab.jpg?v=1791412777 Boc-(R)-3-amino-3-(3-trifluoromethylphenyl)propionic acid, Purity by HPLC ≥ 99% | 501015-18-5 Boc-(R)-3-amino-3-(3-trifluoromethylphenyl)propionic acid|15579|501015-18-5 https://www.jk-sci.com/products/j5315636 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9c6743f4528afea26d1ad2a93b9d3d48.jpg?v=1791412713 Fmoc-(S)-3-amino-3-(2-methoxyphenyl)propionic acid, Purity ≥ 95% (NMR) | 501015-28-7 Fmoc-(S)-3-amino-3-(2-methoxyphenyl)propionic acid|15636|501015-28-7 https://www.jk-sci.com/products/j5315614 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/0dba3379f9d16e5198fcf3003b5ea671.jpg?v=1791412735 Boc-(S)-3-amino-3-(4-nitrophenyl)propionic acid, Purity by HPLC ≥ 99% | 499995-73-2 Boc-(S)-3-amino-3-(4-nitrophenyl)propionic acid|15614|499995-73-2 https://www.jk-sci.com/products/s57c4x-12462 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/06463e9ccb88f743ed596d1ae39ff477.jpg?v=1791381021 Ambrisentan Impurity 2, 99.10% | 1639429-81-4 Ambrisentan Impurity 2|C4X-12462|1639429-81-4 https://www.jk-sci.com/products/j5315686 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/51b394fcc933ff87328cfbdb50c2720e.jpg?v=1791412660 (R)-3-Amino-3-(3,5-dimethoxyphenyl)propionic acid, Purity by HPLC ≥ 99% | 744193-65-5 (R)-3-Amino-3-(3,5-dimethoxyphenyl)propionic acid|15686|744193-65-5 https://www.jk-sci.com/products/s57c4x-12466 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a1afaa763ecab9b1c13ce32a0103fb0d.jpg?v=1791381021 Ambrisentan Impurity 6, 99.40% | 1007358-76-0 Ambrisentan Impurity 6|C4X-12466|1007358-76-0 https://www.jk-sci.com/products/j5315650 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/21b1c75cb3a8fa6ba22970c144639d69.jpg?v=1791412688 Boc-(S)-3-amino-3-(2-hydroxyphenyl)propionic acid, Purity by HPLC ≥ 98% | 499995-78-7 Boc-(S)-3-amino-3-(2-hydroxyphenyl)propionic acid|15650|499995-78-7 https://www.jk-sci.com/products/j5315705 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e95bca7b08597afa5fd6973bd521f978.jpg?v=1791412642 (R)-3-Amino-3-(1-naphthyl)propionic acid, Purity by HPLC ≥ 99% | 775280-91-6 (R)-3-Amino-3-(1-naphthyl)propionic acid|15705|775280-91-6 https://www.jk-sci.com/products/s57c4x-124711 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1142165.png?v=1791381015 Bisoprolol EP Impurity K, 94.50% | 864544-37-6 Bisoprolol EP Impurity K|C4X-124711|864544-37-6 https://www.jk-sci.com/products/j5315866 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/1d6c5d8593f865ad5693139081e7bd41.jpg?v=1791412565 Boc-(S)-a-(3-thiophenylmethyl)proline | 1217714-91-4 Boc-(S)-a-(3-thiophenylmethyl)proline|15866|1217714-91-4 https://www.jk-sci.com/products/j5315715 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/63faa5769452a7d88eaaba1f1648fb91.jpg?v=1791412628 Fmoc-(S)-3-amino-3-(2-naphthyl)propionic acid, Purity by HPLC ≥ 99% | 507472-11-9 Fmoc-(S)-3-amino-3-(2-naphthyl)propionic acid|15715|507472-11-9 https://www.jk-sci.com/products/j5315740 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/3030788ffabbb0e5651af2aaef7fd3a1.jpg?v=1791412594 Boc-(R)-3-amino-3-(6-methoxy-3-pyridyl)propionic acid, Purity by HPLC ≥ 96% | 1212298-83-3 Boc-(R)-3-amino-3-(6-methoxy-3-pyridyl)propionic acid|15740|1212298-83-3 https://www.jk-sci.com/products/s57c4x-124719 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/551444_830555e0-a158-483d-a243-2b0e6f001e7e.png?v=1791381011 Bisoprolol EP Impurity S, 99.50% | 123-08-0 Bisoprolol EP Impurity S|C4X-124719|123-08-0 https://www.jk-sci.com/products/a01955340 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/126415.png?v=1788913068 2-[Bis(methylthio)methylene]malononitrile, 97% | 5147-80-8 2-[Bis(methylthio)methylene]malononitrile, 97%|955340|5147-80-8 https://www.jk-sci.com/products/s57c4x-124736 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/e0623cc59fbb44570bc11f27a2601d5b.jpg?v=1791380998 Bisoprolol Impurity 36, 97.00% | 14697-49-5 Bisoprolol Impurity 36|C4X-124736|14697-49-5 https://www.jk-sci.com/products/s57c4x-124722 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2d970bb35d6219b6ba5ab38ca3cb5e66.jpg?v=1791381003 Bisoprolol Impurity 22, 98.30% | 1447715-45-8 Bisoprolol Impurity 22|C4X-124722|1447715-45-8 https://www.jk-sci.com/products/s57c4x-124725 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/91a9a70cfd31f87496716fba590ffd85.jpg?v=1791381001 Bisoprolol EP Impurity E(Mixture of Z and E Isomers), 93.70% | 1217245-60-7 Bisoprolol EP Impurity E(Mixture of Z and E Isomers)|C4X-124725|1217245-60-7 https://www.jk-sci.com/products/s57c4x-12474 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/23d7678fa3960be7e242c047d8ff870e.jpg?v=1791380992 Bisoprolol EP Impurity D, 99.70% | 1225195-71-0 Bisoprolol EP Impurity D|C4X-12474|1225195-71-0 https://www.jk-sci.com/products/j5315907 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/6c6b15a8975d1c0921024b9a3acd1784.jpg?v=1791412535 (R)-g-(3-Bromobenzyl)-L-proline·HCl | 1049734-10-2 (R)-g-(3-Bromobenzyl)-L-proline·HCl|15907|1049734-10-2 https://www.jk-sci.com/products/s57c4x-124747 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/GeneralChemical_optimized_cd51f541-5a0e-43ab-8d5f-5ecb7fd4fd21.png?v=1791380988 Bisoprolol Impurity 47 TFA salt, Purity: 98.6% Bisoprolol Impurity 47 TFA salt|C4X-124747 https://www.jk-sci.com/products/j5315984 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/2402b0418835fe7426d8750ed1d6b6bd.jpg?v=1791412496 Boc-(±)-trans-4-(2-fluorophenyl)pyrrolidine-3-carboxylic acid, Purity by HPLC ≥ 99% | 959581-02-3 Boc-(±)-trans-4-(2-fluorophenyl)pyrrolidine-3-carboxylic acid|15984|959581-02-3 https://www.jk-sci.com/products/j5316000 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/87c82f0731a1223877725f1a24391426.jpg?v=1791412476 (±)-trans-4-(2-Methylphenyl)pyrrolidine-3-carboxylic acid hydrochloride, Purity by HPLC ≥ 98% | 1047651-73-9 (±)-trans-4-(2-Methylphenyl)pyrrolidine-3-carboxylic acid hydrochloride|16000|1047651-73-9 https://www.jk-sci.com/products/j5316016 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9e35de27531a40daf5eb5d4bbf482013.jpg?v=1791412454 (±)-trans-4-(2,5-Dichlorophenyl)pyrrolidine-3-carboxylic acid hydrochloride, Purity by HPLC ≥ 98% | 1049734-30-6 (±)-trans-4-(2,5-Dichlorophenyl)pyrrolidine-3-carboxylic acid hydrochloride|16016|1049734-30-6 https://www.jk-sci.com/products/s57c4x-12476 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/57c53ad621e3979f6307f06c6d7502df.jpg?v=1791380984 Bisoprolol EP Impurity F, 99.50% | 1798418-82-2 Bisoprolol EP Impurity F|C4X-12476|1798418-82-2 https://www.jk-sci.com/products/s57c4x-1132112 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/359250_fdfab4f2-ddfe-494a-8907-fcf98c2c4fbb.png?v=1791383373 Atorvastatin Impurity 112, 95.10% | 459-57-4 Atorvastatin Impurity 112|C4X-1132112|459-57-4 https://www.jk-sci.com/products/s57c4x-1169186 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/599052_a0850c80-b6ef-4d5c-94d2-7384a2458486.png?v=1791382344 Rosuvastatin Impurity 186, Purity: 100.0% | 61445-55-4 Rosuvastatin Impurity 186|C4X-1169186|61445-55-4 https://www.jk-sci.com/products/a01955588 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/271136_9605c4af-9fff-4ea7-9c0f-130704a51957.png?v=1790009142 Sodium thiosulfate anhydrous, 98% | 7772-98-7 Sodium thiosulfate anhydrous, 98%|955588|7772-98-7 https://www.jk-sci.com/products/s57c4x-1194 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/347456_b07032f2-5d73-4ea3-8a75-c6f23867f38b.png?v=1791381998 Lamivudine, 99.90% | 134678-17-4 Lamivudine|C4X-1194|134678-17-4 https://www.jk-sci.com/products/j5316054 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/f03faa5e9cac03c8df02b2c7fd2d3f81.jpg?v=1791412398 (±)-trans-4-(4-Pyridinyl)pyrrolidine-3-carboxylic acid dihydrochloride, Purity by HPLC ≥ 98% | 1049740-23-9 (±)-trans-4-(4-Pyridinyl)pyrrolidine-3-carboxylic acid dihydrochloride|16054|1049740-23-9 https://www.jk-sci.com/products/s57c4x-11482 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/a27543c885536def332f0fecf68d443b_23f44592-f3e8-46ba-bef1-af6ddb0a5316.jpg?v=1791382860 Amoxicillin EP Impurity A(Sulbactam EP Impurity B), 99.30% | 551-16-6 Amoxicillin EP Impurity A(Sulbactam EP Impurity B)|C4X-11482|551-16-6 https://www.jk-sci.com/products/s57c4x-117628 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/9928b7c164738a1e7be684eb352e2416.jpg?v=1791382230 Salbutamol Impurity 28, 97.60% | 174607-68-2 Salbutamol Impurity 28|C4X-117628|174607-68-2 https://www.jk-sci.com/products/j5316063 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/923234cf4d63665c892882a376a7773b.jpg?v=1791412381 Boc-(±)-trans-4-isopropylpyrrolidine-3-carboxylic acid, Purity by HPLC ≥ 97% | 1212348-80-5 Boc-(±)-trans-4-isopropylpyrrolidine-3-carboxylic acid|16063|1212348-80-5 https://www.jk-sci.com/products/j5316108 2026-10-08T05:07:24-07:00 daily https://cdn.shopify.com/s/files/1/0506/0005/0878/files/b02bdd6624d288eeafc208293478edd6.jpg?v=1791412361 1-Boc-2-triphenylphosphonium-hydrazine bromide, Purity by HPLC ≥ 99% | 356534-53-7 1-Boc-2-triphenylphosphonium-hydrazine bromide|16108|356534-53-7