mepiprazole and its Impurities

Mepiprazole is a minor tranquilizer with a phenylpiperazine structure. Mepiprazole mediates a weak inhibitory action on the uptake of 5-HT on hypothalamic neurons 7. It is a pyrazolyl-alkyl-piperazine derivative. Reference standards of Mepiprazole API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.