4-氨基-6-羟基吡唑-(3,4-d)嘧啶

4-氨基-6-巯基吡唑酮[3,4-d]嘧啶

4-methylsulfanyl-1,2-dihydropyrazolo[3,4-d]pyrimidin-6-one

(6-氯-1(2)H-吡唑并[3,4-d]嘧啶-4-基)-甲基-胺

6-氯-4-甲基磺酰基-1(2)H-吡唑并[3,4-d]嘧啶