2,4-diamino-7H-pyrrolo[2,3-d]pyrimidine-5-carbonitrile

3-Chlor-3a,4,7,7a-tetrahydro-etheno-inden-5,5,6,6-tetracarbonitril

4-氨基-7h-吡咯并[2,3-d]嘧啶-5-甲腈

4-氨基-6-溴-7H-吡咯并[2,3-d]嘧啶-5-甲腈

3-oxidoazaniumylidyne-2-(2-phenylindol-3-ylidene)propanenitrile