5413-96-7
4-氯-1,6-二甲基-1H-吡唑并[3,4-d]嘧啶
→
5399-91-7
6-amino-1-methyl-2H-pyrazolo[3,4-d]pyrimidin-4-one
5334-35-0
6-chloro-1-methyl-2H-pyrazolo[3,4-d]pyrimidin-4-one