57905-32-5
ethyl 2-acetyl-3-aminoacrylate
+
93-89-0
安息香酸乙酯
→
134653-73-9
ethyl 4-oxo-6-phenyl-1H-pyridine-3-carboxylate
98-88-4
苯甲酰氯
134653-70-6
2-Dimethylaminomethylen-acetessigsaeureethylester