Certificate of Analysis


Catalog Number: M3665
Product Name: Promethazine hydrochloride
CAS Number: 58-33-3

Physical and Chemical Properties
Formula: C17H21ClN2S
Molecular Weight: 320.88
Solubility: DMSO
Long-term Storage: at -20°C
Chemical Structure: Promethazine hydrochloride Structure
Analytical Data
HPLC: Shows Min >98% purity
H-NMR: Consistent with structure
Product Information
Description: Promethazine hydrochloride is a potent histamine H1 receptor antagonist, used as a sedative and antiallergic medication.
Stability and Solubility Advice: Information concerning product stability, particularly in solution, has rarely been reported and in most cases we can only offer a general guide.
We recommend that stock solutions, once prepared, are stored aliquoted in tightly sealed vials at -20°C or below and used within 1 month.