94-02-0
苯甲酰乙酸乙酯
+
79-08-3
溴乙酸
→
~90%
90833-15-1
3-benzoyl-4-ethoxy-4-oxobutanoate
141-05-9
马来酸二乙酯
~32%
90832-96-5
ethyl 2-oxo-5-phenyl-3H-furan-4-carboxylate