diethyl 1-acetylpentane-1,5-dicarboxylate

diethyl 2,13-bis(acetyl)-1,14-tetradecanedioate

ethyl 4-fluorobenzalacetoacetate

diethyl 4-hydroxy-2-(4-methoxyphenyl)-4-methyl-6-oxocyclohexane-1,3-dicarboxylate

2-(4-methoxy-benzyl)-3-oxo-butyric acid ethyl ester