6-溴吡啶并[2,3-D]-2,4-二氨基嘧啶

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

2,4,6-三氨基-5-硝基嘧啶

pyrimido[4,5-d]pyrimidine-2,4-diamine

5-[(4-chlorophenyl)diazenyl]pyrimidine-2,4,6-triamine