2,2-Dimethyl-4-oxo-4-(2,3,5,6-tetramethylphenyl)butyric acid

5-(5-Methoxy-2-methylphenyl)-3-methyl-5-oxovaleric acid

5-(5-Fluoro-2-methoxyphenyl)-3-methyl-5-oxovaleric acid

4-(2-Chlorophenyl)-4-oxobutyric acid

Ethyl 4-(4-chlorophenyl)-4-oxobutyrate

ethyl 7-(2,5-dimethylphenyl)-7-oxoheptanoate

ethyl 6-(3,5-ditrifluoromethylphenyl)-6-oxohexanoate

ethyl 6-(3,4-dimethylphenyl)-6-oxohexanoate

Ethyl 2,2-dimethyl-4-oxo-4-phenylbutyrate

Ethyl 5-(4-methylphenyl)-5-oxovalerate

Ethyl 4-(3,5-dichlorophenyl)-4-oxobutyrate