The chemical Perphenazine has a designated molecular formula of C21H26ClN3OS and a molecular weight of 403.969 g/mol. Synonyms may include: AI3-50151, 2-Chloro-10-3-(1-(2-hydroxyethyl)-4-piperazinyl)propyl phenothiazine, 2-Chloro-10-(3-(1-(2-hydroxyethyl)-4-piperazinyl)propyl)phenothiazine, 4-(3-(2-Chlorophenothiazin-10-yl)propyl)-1-piperazineethanol, Chlorperphenazine, Chlorpiprazine, Decentan, EINECS 200-381-5, Emesinal, Etaperazin (ChemID). Perphenazine has been assigned a MeSH pharmacological action of: Dopamine Antagonist.