CAS Registry Number

CAS 118-48-9 — Isatoic anhydride

Isatoic anhydride is an organic compound primarily used as a key intermediate in the synthesis of pharmaceuticals, dyes, and agrochemicals, particularly in the production of sulfonamides and other heterocyclic compounds. It appears as a white to off-white crystalline powder with a melting point of around 230–233°C. This chemical is stable under normal conditions, requiring no special storage precautions beyond ambient temperatures. Molekula supplies Isatoic anhydride (CAS 118-48-9, C8H5NO3, MW 163.1302) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.