乙酰乙酸异丙酯

2-甲基-4H-1-苯并噻喃-4-酮

2,2-diethyl-6-methyl-1,3-dioxin-4-one

2,6-dimethyl-2-phenyl-1,3-dioxin-4-one

乙酰乙酸环己酯