CAS Registry Number

CAS 349-88-2 — 4-Fluorobenzenesulfonyl chloride

4-Fluorobenzenesulfonyl chloride is an aromatic sulfonyl chloride widely used as a reagent in organic synthesis, particularly for introducing sulfonyl groups into molecules, and in the preparation of pharmaceutical intermediates, agrochemicals, and specialty polymers. It is a colorless to pale yellow liquid with a pungent odor, reactive toward nucleophiles and moisture. CAS 349-88-2. Molecular formula C6H4ClFO2S (MW 194.61 g/mol). Melting point ~20–22°C, boiling point 115–117°C at 10 mmHg. Soluble in organic solvents like dichloromethane and THF; reacts violently with water and strong bases. Non-classified under GHS (no signal word). Store under inert atmosphere, below 30°C, in tightly sealed containers. Molekula supplies 4-fluorobenzenesulfonyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability