(1,1'-Biphenyl)-4,4'-diethanaminium, N,N'-bis(2,2-diethoxyethyl)-N,N,N',N'-tetramethyl-beta,beta'-dioxo-, dibromide 13717-24-3 4,4-Dmae alpha,alpha-Bis(dimethylammoniumacetaldehyde diethylacetal)-4,4-diacetylbiphenyl