1'-Methyl-4'-phenyl-1,4'-bipiperidine dihydrochloride 1,4'-BIPIPERIDINE, 1'-METHYL-4'-PHENYL-, DIHYDROCHLORIDE 1-Methyl-4-phenyl-4-(1-piperidinyl)piperidine dihydrochloride 102071-40-9 4-Phenyl-4-piperidino-1-methylpiperidine dihydrochloride Piperidine, 1-methyl-4-phenyl-4-piperidino-, dihydrochloride