CAS Registry Number

CAS 1189-71-5 — Chlorosulfonyl isocyanate

Chlorosulfonyl isocyanate is a highly reactive organic compound used in the synthesis of isocyanates, sulfonamides, and other specialty chemicals. It is a corrosive, moisture-sensitive reagent requiring careful handling. CAS: 1189-71-5, Molecular Formula: ClSO₂NCO, Molecular Weight: 141.53 g/mol. Store at 2 to 8 °C. Signal word: Danger. Molekula supplies Chlorosulfonyl isocyanate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.