USPUSP-NF
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Promethazine Hydrochloride
C17H20N2S·HCl 320.88
 10H-Phenothiazine-10-ethanamine, N,N,α-trimethyl-, monohydrochloride, (±)-;
 (±)-10-[2-(Dimethylamino)propyl]phenothiazine monohydrochloride [58-33-3]

DEFINITION

Promethazine Hydrochloride contains NLT 97.0% and NMT 101.5% of promethazine hydrochloride (C17H20N2S·HCl), calculated on the dried basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Promethazine Hydrochloride RS
USP Promethazine Related Compound B RS
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