Pipendoxifene Hydrochloride and its Impurities

Pipendoxifene hydrochloride is a selective estrogen receptor modulator (SERM) investigated for the treatment of hormone-dependent breast cancer by blocking estrogen receptor–mediated tumor growth. Reference standards of Pipendoxifene Hydrochloride API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.