4-methyl-N1-p-tolyl-o-phenylenediamine

5,5'-二甲基-2,2'-联苯二胺

2'-amino-3-bromo-5,5'-dimethyl-biphenyl-2-ol

3,6-dimethyl-carbazole-2,7-diyldiamine

5-methyl-1-p-tolyl-1H-benzotriazole