3-oxo-N-(2-phenylacetyl)butanamide

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

3-氧代-N-吡啶-3-基丁酰胺

5-iodo-2,2,6-trimethyl-1,3-dioxin-4-one

乙酰乙酸仲丁酯