1069-12-1
乙烯, 四甲氧基-
+
5394-63-8
2,2,6-三甲基-4H-1,3-二英-4-酮
→
~36%
93279-41-5
2,2,3,3-tetramethoxy-6-methylpyran-4-one
520-45-6
脱氢乙酸
93279-40-4
3-Butyn-2-one, 4-ethoxy- (9CI)