乙酸酐

双苯基脲

3,4-二苯胺基-3-环丁烯-1,2-二酮

4-dimethylamino-6-phenylamino-2-phenylimino-1-phenyl-1,2-dihydro-1,3,5-triazine

1,N-diphenyl-6-phenylimino-1,6-dihydro-[1,3,5]triazine-2,4-diamine