3-Methyl-5-(1-naphthyl)-5-oxovaleric acid

4-(4-n-Butylphenyl)-2,2-dimethyl-4-oxobutyric acid

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

2,2-Dimethyl-4-[3,4-(ethylenedioxy)phenyl]-4-oxobutyric acid

5-(2,4-Dimethylphenyl)-3-methyl-5-oxovaleric acid

2,2-Dimethyl-4-(4-fluoro-3-methylphenyl)-4-oxobutyric acid

5-(3-Fluoro-4-methoxyphenyl)-3-methyl-5-oxovaleric acid

6-(2-chlorophenyl)-6-oxohexanoic acid

Ethyl 4-(3-bromophenyl)-4-oxobutyrate

Ethyl 7-(4-chlorophenyl)-7-oxoheptanoate

ethyl 8-(3,5-ditrifluoromethylphenyl)-8-oxooctanoate