Product Introduction

Dimethyl Sulfoxide (DMSO, CAS No. 67-68-5) is a highly polar, water-miscible aprotic organic solvent widely used in chemical synthesis, pharmaceutical research, biotechnology, and laboratory applications.

With excellent solvating ability for both polar and nonpolar compounds, DMSO is one of the most versatile laboratory solvents. It is commonly used as a reaction solvent, cryoprotectant, drug formulation solvent, sample preparation reagent, and biological research additive.

Due to its strong polarity, high boiling point, and ability to penetrate biological membranes, DMSO plays an important role in organic synthesis, cell biology, molecular biology, and pharmaceutical development.

Structural Characteristics

Sulfoxide Functional Group (S=O)

The sulfoxide group provides:

• Strong dipole moment
• Excellent solvent polarity
• Hydrogen bond accepting ability
• Strong interaction with polar molecules

Methyl Groups

The two methyl groups contribute:

• Organic solubility
• Compatibility with nonpolar compounds
• Low molecular weight characteristics

Key Research Applications

1. Organic Synthesis Solvent

DMSO is one of the most commonly used solvents in synthetic chemistry.

Applications include:

• Nucleophilic substitution reactions
• Oxidation reactions
• Cross-coupling reactions
• Organometallic chemistry
• Reaction optimization studies

Its high polarity helps dissolve many inorganic salts and organic substrates.

2. Pharmaceutical Research and Drug Development

DMSO is widely used in pharmaceutical laboratories.

Applications include:

• Compound dissolution
• Drug screening libraries
• Formulation studies
• Active pharmaceutical ingredient (API) research
• Bioavailability studies

DMSO is frequently used to prepare concentrated stock solutions for biological assays.

3. Cell Biology and Cryopreservation

DMSO is an important reagent in biological research.

Applications include:

• Cell freezing and preservation
• Stem cell storage
• Cell culture research
• Biological sample protection

Its cryoprotective properties help reduce ice crystal formation during freezing.

4. Molecular Biology Research

DMSO is used in nucleic acid-related applications.

Applications include:

• PCR optimization
• DNA amplification improvement
• RNA preservation research
• Molecular assay development

DMSO can influence DNA secondary structures and improve amplification of GC-rich templates.

5. Analytical Chemistry

DMSO is used as a solvent in analytical workflows.

Applications include:

• NMR sample preparation
• HPLC sample dissolution
• Spectroscopic analysis
• Chemical extraction

6. Electrochemistry and Battery Research

DMSO is investigated as a functional solvent in electrochemical systems.

Applications include:

• Electrolyte solvent studies
• Lithium battery research
• Metal-ion chemistry
• Electrochemical reaction media

Its high dielectric constant and coordination ability make it useful in electrolyte research.

Advantages

• Excellent solvent power
• Completely miscible with water
• Dissolves many organic and inorganic compounds
• High boiling point and thermal stability
• Widely compatible with biological systems
• Suitable for chemical and biochemical research

Storage & Handling

• Store in a cool place.
• Keep container tightly closed in a dry and well-ventilated place.
• Containers which are opened must be carefully resealed and kept upright to prevent leakage.

Research Areas

• Organic chemistry
• Pharmaceutical development
• Biotechnology
• Molecular biology
• Cell biology
• Analytical chemistry
• Electrochemical research

Q1: What is DMSO?

A: Dimethyl Sulfoxide (DMSO, CAS No. 67-68-5) is a highly polar aprotic solvent widely used in chemical synthesis, pharmaceutical research, and biological applications.

Q2: What is DMSO used for?

A: DMSO is mainly used for:

• Organic reaction solvents
• Drug compound dissolution
• Cell cryopreservation
• Molecular biology experiments
• Analytical sample preparation

Q3: Why is DMSO used in cell freezing?

A: DMSO acts as a cryoprotectant by reducing ice crystal formation and helping preserve cell membrane integrity during freezing.

Q4: Is DMSO water soluble?

A: Yes. DMSO is completely miscible with water due to its strong polarity.

Q5: What is the difference between DMSO and DMF?

Q6: Can DMSO be used in PCR?

A: Yes. DMSO is sometimes added to PCR reactions to improve amplification of GC-rich DNA templates by reducing secondary structures.

Q7: Why does DMSO absorb water?

A: DMSO is hygroscopic because the sulfoxide oxygen strongly interacts with water molecules through hydrogen bonding.

Q8: How should DMSO be stored?

A: Store in a sealed container under dry conditions and minimize exposure to humid air.