277319-62-7
4-氨基苄氨肟
+
105-58-8
碳酸二乙酯
→
~90%
864680-71-7
3-(4-aminophenyl)-2H-1,2,4-oxadiazol-5-one
616-38-6
碳酸二甲酯
~80%
872728-83-1
ethyl 2-[4-(5-oxo-2H-1,2,4-oxadiazol-3-yl)anilino]acetate