64-18-6
Formic acid
+
650638-16-7
5-氨基-1-(3-吡啶)-1H-吡唑-4-甲腈
→
650638-18-9
1,5-二氢-1-(3-吡啶)-4H-吡唑并[3,4-d]嘧啶-4-酮
42166-50-7
3-肼基吡啶
甲酸
650638-19-0
4-氯-1-(3-吡啶)-1H-吡唑并[3,4-d]嘧啶