24801-43-2
2-Butyliden-bernsteinsaeure-diethylester
→
~88%
3283-25-8
(2Z)-2-butylidenebutanedioic acid
123-72-8
丁醛
+
906-65-0
2-(三苯基亚磷基)丁二酸酐
137669-41-1
3-Ethoxycarbonyl-3-heptensaeure
924-97-0
4-OXOHEPTANOIC ACID