European Pharmacopoeia (EP) Reference Standard Synonym(s): 10-[2-(1-Methyl-2-piperidyl)ethyl]-2-(methylthio)-10H-phenothiazine hydrochloride Amino Acid Sequence: Empirical Formula: C₂₁H₂₆N₂S₂ -+ HCl Formula Weight: 407.04 Linear Formula: …