Dimethyl-3,10-dioxo-6-dodecendioat

methyl 8-chloro-3-oxooct-6-enoate

2-(dimethylamino)ethyl 3-oxobutanoate

3-氧代丁酸 4-甲氧基苄基酯

2,2-二氯乙酰乙酸甲酯