20656-61-5
甲基丙二酰氯
+
100643-27-4
2,6-二氨基-4-嘧啶醇
→
~63%
124738-76-7
2-氨基-4,7-二氢-4-氧代-1H-吡咯并[2,3-d]嘧啶-5-羧酸
124738-80-3
2-Amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidine-5-carboxami de
124738-81-4
2-氨基-4-氯-7h-吡咯并[2,3-d]嘧啶-5-甲腈