Description

Methyl Fluorosulfonate is a highly reactive and versatile fluorosulfonating agent, essential for introducing the fluorosulfonyl group into organic molecules. Its primary value lies in its potent electrophilicity, making it a critical reagent for synthesizing sulfonate esters and other specialty chemicals in advanced research and development. This compound is particularly sought after by pharmaceutical intermediates manufacturers and organic synthesis laboratories working on novel compounds and materials.

Application

• Pharmaceutical Intermediate Synthesis: Key reagent for creating sulfonate ester prodrugs and active pharmaceutical ingredients (APIs).
• Agrochemical Production: Used in the synthesis of advanced herbicides, fungicides, and pesticide intermediates.
• Polymer Chemistry: Acts as a monomer or modifying agent for specialty polymers with specific sulfonate functionalities.
• Organic Synthesis Reagent: Employed as a powerful electrophile and fluorosulfonylating agent in complex multi-step synthetic routes.
• Material Science Research: Utilized in the development of novel ionic liquids, electrolytes, and advanced functional materials.
• Laboratory Scale Chemical Development: Serves as a critical tool for process research and development (R&D) in fine chemical production.

Basic Information

Product Name	Methyl Fluorosulfonate
CAS No.	421-20-5
Molecular Formula	CH3FO3S
Molecular Weight	114.09 g/mol
Synonyms	Fluorosulfonic Acid Methyl Ester; Methyl Fluosulfonate; Methoxyfluorosulfur Trioxide; Methyl Ester of Fluorosulfonic Acid; Methyl Sulfurofluoridate; CH3OSO2F
EINECS	207-005-8

Quality Control

Our Methyl Fluorosulfonate is manufactured under strict quality protocols to ensure batch-to-batch consistency and high purity for demanding synthetic applications. Each lot undergoes comprehensive analytical testing, including gas chromatography (GC) and NMR spectroscopy, to verify identity and assay. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your quality management systems.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area, away from heat sources and incompatible materials such as strong bases and oxidizing agents. Due to its highly volatile nature, ensure containers are kept tightly sealed and upright to prevent leakage and pressure build-up. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	1.42 - 1.45 g/mL
Refractive Index (n20D)	1.345 - 1.355

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.