Synonyms:
2,2'-tolidine ; 2,2'-dimethyl[1,1'-biphenyl]-4,4'-diamine ; 2,2'-dimethyl-4,4'-diaminobiphenyl(m-tb) ; 2,2'-dimethyl-4,4'-diaminobiphenyl ; 2,2'-dimethyl-4,4'-diamino-1,1'-biphenyl ; 4,4'-diamino-2,2'-dimethylbiphenyl ; apb-144 ; 2,2'-dimethyl-4,4'-biphenyldiamine ; m-tolidine ; 2,2'-dimethylbenzidine