Benzidine
Benzidine acetate
Benzidine dihydrochloride
4,4'-Diacetylbenzidine
3,3'-Diaminobenzidine
3,3'-Diaminobenzidine tetrahydrochloride
3,3'-Dicarboxybenzidine
3,3'-Dichlorobenzidine
3,3'-Dichlorobenzidine dihydrochloride
3,3'-Dihydroxybenzidine
N,N'-Diphenylbenzidine
N,N,N',N'-Tetramethylbenzidine
3,3',5,5'-Tetramethylbenzidine
o-Tolidine