2,4-二氨基-6,7-二苯基-蝶啶

4-[2,4-diamino-7-(4-oxocyclohexa-2,5-dien-1-ylidene)-5,8-dihydropteridin-6-ylidene]cyclohexa-2,5-dien-1-one

6-甲基-2,4-蝶啶二胺

7-甲基-2,4-蝶啶二胺

6,8-diamino-1H-pyrimido[5,4-g]pteridine-2,4-dione