Description

Fluorosulfurous Acid Methyl Ester is a specialized organosulfur compound used as a key reagent and building block in advanced chemical synthesis. Its unique structure, featuring both fluorine and sulfur functionalities, makes it a valuable intermediate for introducing fluorosulfonyl or methylsulfonyl groups into target molecules. This compound is primarily sought by research and development laboratories and production facilities in the pharmaceutical and agrochemical sectors for creating novel active ingredients and fine chemicals.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring fluorosulfonyl or methylsulfonate ester moieties.
• Agrochemical Synthesis: Serves as a key building block for developing new herbicides, fungicides, and insecticides with enhanced properties.
• Material Science Research: Employed in the development of novel polymers, electrolytes, or specialty materials where sulfur-fluorine chemistry is advantageous.
• Organic Synthesis Reagent: Acts as an electrophilic reagent for methylation or sulfonylation reactions in complex molecule construction.
• Chemical Derivatization: Useful for modifying compounds to alter their solubility, reactivity, or analytical detection characteristics.

Basic Information

Product Name	Fluorosulfurous Acid Methyl Ester
CAS No.	22335-03-1
Molecular Formula	CH3FO2S
Molecular Weight	98.10 g/mol
Synonyms	Methyl fluorosulfite; Fluorosulfinic acid methyl ester; Methyl fluoro sulfinate; Methoxyfluorosulfurous acid; Fluorosulfurous acid methyl ester; Methyl ester of fluorosulfurous acid; FSME
EINECS	Contact for details

Quality Control

Our Fluorosulfurous Acid Methyl Ester is produced under strict quality control protocols to ensure batch-to-batch consistency and high purity suitable for synthetic applications. Each lot is analyzed using techniques including GC, NMR, and titration to confirm identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, impurities, and physical properties is provided with every shipment. We adhere to cGMP principles where applicable to support our customers' regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is sensitive to moisture and strong bases; ensure the container is kept tightly sealed under an inert atmosphere if specified. Segregate from incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.3 g/mL

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