5,5-二甲基-4-氧代己酸

methyl 2,5,5-trimethyl-4-oxohexanoate

methyl 5,5-dimethyl-4-oxohexanoate

methyl 2-bromo-5,5-dimethyl-4-oxohexanoate

methyl 3-bromo-5,5-dimethyl-4-oxohexanoate