Ethyl 7-chloro-3-methyl-4,4,5,5,6,6,7,7-octafluoroheptanoate

3-甲基-4-硝基丁醛

2-氰基-3-甲基戊二酸二乙酯

ethyl 2,2-dimethylbut-3-enoate

ethyl 2-bromobut-2-enoate