四氢呋喃-2-基甲基3-氧代丁酸酯

3-acetyl-2,6-dimethylpyran-4-one

2,6-dimethyl-2-(2-oxopropyl)-1,3-dioxin-4-one

N-butanoyl-3-oxobutanamide

3-氧代-N-(3-(三氟甲基)苯基)丁酰胺