Methanesulfonyl Chloride

Chemical Name: Methanesulfonyl Chloride

Abbreviation: MSC

CAS No: 124-63-0

Appearance: Colorless to pale yellow liquid

Chemical Formula: CH3SO2Cl

Description

Methanesulfonyl Chloride (MSC), also known as Mesyl Chloride, is a highly reactive sulfonylating reagent widely used in organic synthesis. It serves as a precursor for mesylates, enabling the activation and transformation of alcohols into better leaving groups. MSC is extensively utilized in pharmaceuticals, agrochemicals, dyes, and specialty chemicals manufacturing.

Applications

• Synthesis of mesylates (alcohol activation)

• Pharmaceutical API and intermediate production

• Agrochemical and dye intermediates

• Specialty and fine chemical synthesis

• Catalyst and polymer modification reactions

Key Properties

• Highly reactive sulfonyl chloride compound

• Effective reagent for alcohol substitution reactions

• Low impurity level suitable for high-purity synthesis

• Excellent leaving-group conversion reagent

Technical Specifications

• Assay: ≥ 98%

• Boiling Point: 161°C

• Density: 1.48 g/cm³

• Moisture Sensitive: Yes

Packaging & Storage

• 180–200 kg drums / smaller packaging available

• Store in cool, dry, well-ventilated area

• Avoid contact with moisture and strong bases

• Keep containers tightly sealed; handle under inert atmosphere preferred

HS Code: 2904 10 90