timiperone and its Impurities

Timiperone, sold under the brand name Tolopelon, is an antipsychotic of the butyrophenone class. Timiperone, is similar in chemical structure to benperidol but has a thiourea group instead of a urea group. Reference standards of Timiperone API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.