819877-81-1
ethyl 2-acetamido-2-chloroacetate
+
5804-85-3
二乙基氰化铝
→
~35%
3357-54-8
5-氨基-2-甲基噁唑-4-羧酸乙酯
99419-09-7
5-amino-2-methyl-1,3-oxazole-4-carbohydrazide