633328-97-9
1-(5-chloropyrazolo[4,3-d]pyrimidin-1-yl)ethanone
→
~45%
633328-98-0
5-氯-1H-吡唑并[4,3-d]嘧啶
20090-69-1
5-氨基-2-氯-4-甲基嘧啶
633328-96-8
N-(2-氯-4-甲基嘧啶-5-基)乙酰胺