CAS Registry Number

CAS 99-91-2 — 4'-Chloroacetophenone

4'-Chloroacetophenone is an aromatic ketone widely used as a lachrymatory agent (tear gas) in self-defense sprays, crowd control, and chemical research, particularly in studies of irritant mechanisms and polymer synthesis. It appears as a white crystalline solid with a sharp, pungent odor. Catalogue details: CAS 99-91-2, molecular formula ClC6H4COCH3, molecular weight 154.59 g/mol. Store at ambient temperature in a tightly sealed container, away from incompatible substances. Signal word: Danger. Molekula supplies 4'-Chloroacetophenone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.