500-22-1
3-吡啶甲醛
+
141-97-9
乙酰乙酸乙酯
→
54756-29-5
ethyl 3-oxo-2-(pyridin-3-ylmethylidene)butanoate
105900-69-4
28447-16-7
4-pyridin-3-ylbut-3-en-2-one