The chemical Prochlorperazine has a designated molecular formula of C20H24ClN3S and a molecular weight of 373.943 g/mol. Synonyms may include: 6140 RP, Bayer A 173, Capazine, Chlormeprazine, Chloro-3 (N-methylpiperazinyl-3 propyl)-10 phenothiazine [French], 2-Chloro-10-(3-(1-methyl-4-piperazinyl)propyl)-phenothiazine, 2-Chloro-10-(3-(4-methyl-1-piperazinyl)propyl)phenothiazine, 2-Chloro-10-(3-(4-methyl-1-piperazinyl)propyl)-10H-phenothiazine (ChemID). Prochlorperazine has been assigned a MeSH pharmacological action of: Dopamine Antagonist.