OLED 531-91-9 |N,N'-Diphenylbenzidine|C24H20N2 |531-91-9|C24H20N2 |N,N'-DIPHENYLBENZIDINE|N,N'-DIPHENYL BIPHENYLAMINE|SYM-DIPHENYLBENZIDINE|TIMTEC-BB SBB002946|(4),N(4')-Diphenyl-biphenyl-4,4'-diamine|1’-biphenyl]-4,4’-diamine,n,n’-diphenyl-[;Benzidine, N,N'-diphenyl-|Diphenylbenzidine||531-91-9