1,1-Diphenyl-2-methyl-3-(1-methyl-4-piperidylamino)propanol dihydrochloride 78186-52-4 Benzhydrol, alpha-(1-methyl-2-(1-methyl-4-piperidylamino)ethyl)-, dihydrochloride alpha-(1-Methyl-2-(1-methyl-4-piperidylamino)ethyl)benzhydrol dihydrochloride