CAS Registry Number

CAS 41507-35-1 — 3-Thiophenecarbonyl chloride

3-Thiophenecarbonyl chloride is an acyl chloride derivative of thiophene, widely used as an intermediate in organic synthesis, pharmaceuticals, and agrochemical production for forming amides, esters, and other functional groups. It appears as a dark liquid with a pungent odor. Key specifications include a CAS number of 41507-35-1, molecular formula C5H3ClOS (corrected from C4H3S(COCl)), and a molecular weight of 146.59 g/mol. Store at 2 to 8°C, handling with care as it carries a **Danger** signal word for its corrosive and hazardous properties. Molekula supplies 3-Thiophenecarbonyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.