4,4’-二氨基-2,2’-二甲基-1,1’-联苯

3,3'-Dimethylbiphenyl-4,4'-dicarbonsaeure-dimethylester

邻甲基苯甲酸甲酯

3,3'-dimethyl-biphenyl-4,4'-dicarbonitrile

4,4'-二氨基-3,3'-二甲基联苯