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Promethazine
Venkatasai is a leading provider of pharmaceutical reference standards, specializing in the supply of high-purity Promethazine reference materials. Our portfolio includes both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamine derivatives (N-NO products). These reference standards play a crucial role in pharmaceutical R&D, aiding in formulation development, ANDA/DMF submissions, quality control, method validation, stability studies, and impurity profiling—including the identification and assessment of potentially genotoxic impurities.
Each Promethazine-related product is rigorously characterized and delivered with a detailed Certificate of Analysis (COA) and comprehensive analytical data to ensure regulatory compliance. Upon request, we also offer EP/USP traceable standards. To maintain the highest quality standards, all materials are subject to periodic re-testing and continuous quality monitoring.
Promethazine Hydrochloride
Promethazine EP Impurity A
Promethazine EP Impurity B (HCl)
Promethazine EP Impurity C (HCl)
Promethazine EP Impurity D
Promethazine N-Oxide
Promethazine Sulfoxide N-Oxide (HCl)
Promethazine-N-glucuronide
Trimeprazine Sulfoxide
10H-Phenothiazine 5-Oxide
10-​Acetyl-​10H-​phenothiazine 5,​5-​dioxide
Phenothiazine S,S-Dioxide
Promethazine Impurity 1
Promethazine Impurity 2
N-Nitroso Promethazine EP Impurity C
N-Nitroso Promethazine EP Impurity A
Promethazine
