123-72-8
丁醛
+
108-59-8
丙二酸二甲酯
→
18795-83-0
dimethyl 2-butylidenepropanedioate
39520-22-4
丁基丙二酸二甲酯
87061-85-6
dimethyl 2-ethyl-3,3-dimethoxy-propane-1,1-dicarboxylate
142560-11-0
tetramethyl cis-3,4-dipropylcyclobutane-1,1,2,2-tetracarboxylate