2,2-Dimethyl-4-oxo-4-(4-n-propylphenyl)butyric acid

4-(5-Chloro-2-thienyl)-2,2-dimethyl-4-oxobutyric acid

5-(2,6-Dimethylphenyl)-3-methyl-5-oxovaleric acid

4-(3,5-Dimethoxyphenyl)-2,2-dimethyl-4-oxobutyric acid

2,2-Dimethyl-4-(4-methoxy-2-methylphenyl)-4-oxobutyric acid

6-[4-(2-Methoxyethoxy)phenyl]-6-oxohexanoic acid

Ethyl 4-(4-bromophenyl)-4-oxobutyrate

Ethyl 5-(4-fluorophenyl)-5-oxovalerate

ethyl 7-(3,5-ditrifluoromethylphenyl)-7-oxoheptanoate

ethyl 8-(4-methoxyphenyl)-8-oxooctanoate

Ethyl 4-(2-bromophenyl)-4-oxobutyrate