1,2,5-selenadiazole-3,4-dicarbonitrile

2-乙基-1H-咪唑-4,5-二甲腈

2-氨基-4,5-咪唑二腈

1,4,5,6-四氢-5,6-二氧-2,3-吡嗪二甲腈

5,6-bis(4-tert-butylphenyl)pyrazine-2,3-dicarbonitrile