921-84-6
→
~93%
4189-20-2
ethyl 5-methyl-2-oxo-1,3-dihydropyrrole-4-carboxylate
1115-30-6
乙酰琥珀酸二乙酯
~77%
1007476-32-5
sodium acetyl acetic acid ethyl ester
+
79-07-2
氯乙酰胺
137271-84-2
2,5-Pyrrolidinedione, 3-acetyl- (9CI)
145888-70-6
5-methyl-2-oxo-1,3-dihydropyrrole-4-carbohydrazide