1-benzyl-1-(1-phenoxypropan-2-yl)aziridin-1-ium perchlorate; 1-(1-methyl-2-phenoxyethyl)-1-(phenylmethyl)-Aziridinium perchlorate; N-Phenoxyisopropyl-N-benzylaziridinium perchlorate; Phenoxybenzamine Hydrochloride Tertery amine Impurity,Phenoxybenzamine Impurity