CAS Registry Number

CAS 2905-21-7 — 2-Fluorobenzenesulfonyl chloride

2-Fluorobenzenesulfonyl chloride is an aromatic sulfonyl chloride used as a key reagent in organic synthesis, particularly for introducing fluorinated sulfonyl groups in pharmaceuticals, agrochemicals, and fine chemicals. It serves as an electrophile in sulfonylation reactions, enabling selective functionalization of amines, alcohols, and other nucleophiles. This chemical has a CAS number of 2905-21-7, with the molecular formula C6H4ClFO2S and a molecular weight of 194.6112 g/mol. It is stable under ambient storage conditions and carries no signal word for hazard classification. Molekula supplies 2-Fluorobenzenesulfonyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.