(1,1'-Biphenyl)-4,4'-dimethanol, alpha,alpha'-bis((4-methyl-1-piperidinyl)methyl)-, dihydrobromide 36341-97-6 4,4'-(2-(4-Methylpiperidyl)-1-hydroxyethyl)biphenyl 4,4'-(2-(4-Methylpiperidyl)-1-hydroxyethyl)biphenyl dibromide Hemicholinium 3 A-4