European Pharmacopoeia (EP) Reference Standard Synonym(s): (−)-Tetramisole hydrochloride; ( S )-(−)-6-Phenyl-2,3,5,6-tetrahydroimidazo[2,1- b ]thiazole hydrochloride; L(−)-2,3,5,6-Tetrahydro-6-phenylimidazo[2,1- b ]thiazole hydrochloride; Levamisole hydrochloride Empirical Formula:...