Protecting reagents are small molecules that selectively modify reactant functional groups, rendering them inactive during multi-step reactions. Especially useful in preventing unwanted activation in the presence of multiple functional groups, choosing the optimal protecting group (considering removal) for complex multi-step schemes is of utmost importance.

As an indispensable tool in synthetic chemistry, J&K Scientific carries a wide range of Protecting reagents.

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Protecting Reagents

Phthalic anhydride, 99%, ACS reagent [CAS: 85-44-9]

SDS Specifications Cat. No. 961211 CAS 85-44-9 MF C8H4O3 MW 148.12 Properties Melting Point 128-134°C 760.0mmhg Boiling Point 284°C 760.0mmhg Flash Point 152°C 760.0mmhg Density 1.53 EINECS 201-607-5 Beilstein 118515...
$77.00
Protecting Reagents

Propylene glycol, 99.5%, ACS reagent [CAS: 57-55-6]

SDS Specifications Cat. No. 952469 CAS 57-55-6 MF C3H8O2 MW 76.09 Synonym 1,2-Propanediol Properties Melting Point -60°C 760.0mmhg Boiling Point 187°C 760.0mmhg Flash Point 103°C 760.0mmhg n20/D 1.4320 Density 1.036...
$42.60
Protecting Reagents

Propylene glycol, 99.8% [CAS: 57-55-6]

SDS Specifications Cat. No. 932144 CAS 57-55-6 MF C3H8O2 MW 76.09 Synonym 1,2-Propanediol Properties Melting Point -60°C 760.0mmhg Boiling Point 187°C 760.0mmhg Flash Point 103°C 760.0mmhg n20/D 1.4320 Density 1.036...
$10.00
Protecting Reagents

Acetyl chloride, 99%

SDS Specifications Cat. No. 919003 CAS 75-36-5 MF C2H3ClO MW 78.50 Properties Melting Point -112°C 760.0mmhg Boiling Point 52°C 760.0mmhg Flash Point 5°C 760.0mmhg n20/D 1.3875 - 1.3910 Density 1.104...
$34.30
Protecting Reagents

Isobutyryl chloride, 98% [CAS: 79-30-1]

SDS Specifications Cat. No. 580093 CAS 79-30-1 MF C4H7ClO MW 106.55 Synonym 2-Methylpropanoyl chloride Properties Melting Point -90°C 760.0mmhg Boiling Point 91-93°C 760.0mmhg Flash Point 8°C 760.0mmhg n20/D 1.4070 Density...
$76.20
Protecting Reagents

N,O-Bis(trimethylsilyl)trifluoroacetamide, 98% [CAS: 25561-30-2]

SDS Specifications Cat. No. 576242 CAS 25561-30-2 MF C8H18F3NOSi2 MW 257.40 Synonym BSTFA Properties Melting Point 760.0mmhg Boiling Point 45-50°C 14.0mmhg Flash Point 24°C 760.0mmhg n20/D 1.3829 - 1.3849 Density...
$23.60