2,2-dimethyl-5-propanoyl-1,3-dioxane-4,6-dione

1-(2,3-dihydro-1,4-benzothiazin-4-yl)propan-1-one

2-bromo-3-methyl-1-trimethylsilylbut-2-en-1-ol,propanoic acid

ethyl 2-methyl-2-propanoylsulfanyldecanoate

4-ethyl-3-propanoyl-1,3-oxazolidin-2-one