1-(1-Benzimidoyl-1-methylethyl)piperidine hydrochloride 16297-34-0 2-Imino-1,1-dimethylphenethylpiperidine hydrochloride Piperidine, 1-(1,1-dimethyl-2-iminophenethyl)-, hydrochloride Piperidine, 1-(1-benzimidoyl-1-methylethyl)-, monohydrochloride