122-51-0
原甲酸三乙酯
+
88947-28-8
4-amino-1,2,5-thiadiazole-3-carboxamide
→
7598-41-6
[1,2,5]噻二唑并[3,4-d]嘧啶-7(3H)-酮
1672-50-0
4,5-二氨基-6-羟基嘧啶