2,2,5-trimethyl-6-(3-oxobutan-2-yl)-1,3-dioxin-4-one

2.4-Dimethyl-3.5-dioxo-hexansaeureethylester

6-(3-hydroxybutan-2-yl)-2,2,5-trimethyl-1,3-dioxin-4-one

6-ethyl-2,2,5-trimethyl-4H-1,3-dioxin-4-one

2-甲基-3-氧代-戊酸