Zuclopenthixol acetate

Zuclopenthixol acetate is a thioxanthene-derived antipsychotic acetate ester, featuring a 10H-thioxanthene core with a piperidine side chain acetylated at the 2-position. This esterification introduces an acetyl moiety (CH2COO−) to the parent drug’s primary amine, forming a stable, less polar derivative. Structurally, it diverges from zuclopenthixol by the replacement of the free amine hydrogen with an acetyl group, enhancing lipophilicity and altering metabolic stability. It serves as a critical HPLC reference standard for quantifying acetylated impurities in zuclopenthixol formulations.