9-氧代-9H-茚并[1,2-B]吡嗪-2,3-二甲腈

5-phenylpyrazine-2,3-dicarbonitrile

5,6,7,8-tetrahydroquinoxaline-2,3-dicarbonitrile

2,3-二氰基-5,6-二苯基吡嗪

5,7-dimethyl-6H-1,4-diazepine-2,3-dicarbonitrile