34915-18-9 56455-90-4 BUTANOIC ACID, 4,4'-((4,4'-DIAMINO-(1,1'-BIPHENYL)-3,3'-DIYL)BIS(OXY))BIS-, DIHY Butanoic acid, 4,4'-((4,4'-diamino-(1,1'-biphenyl)-3,3'-diyl)bis(oxy))bis-, dihydrochloride Butyric acid, 4,4'-(4,4'-diamino-m,m'-biphenylenedioxy)di-, dihydrochloride Dicarboxidine dihydrochloride Dicarboxidine hydrochloride Hydrochloric acid dicarboxide gamma,gamma'-(4,4'-Diamino-3,3'-biphenylylenedioxy)dibutyric acid dihydrochloride gamma,gamma'-3,3'-Benzidine dioxydibutyric acid dihydrochloride