4,6-二氯-1-甲基-1H-吡唑并[3,4-d]嘧啶

1-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6-dithione

1-methyl-4-sulfanylidene-2H-pyrazolo[3,4-d]pyrimidin-6-one

1,5,7-trimethylpyrazolo[3,4-d]pyrimidine-4,6-dione

2-[(4-amino-1-methylpyrazolo[3,4-d]pyrimidin-6-yl)amino]ethanol