5-(4-Chloro-2-fluorophenyl)-5-oxovaleric acid

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

2,2-Dimethyl-4-(1-naphthyl)-4-oxobutyric acid

2,2-Dimethyl-4-(4-ethylphenyl)-4-oxobutyric acid

2,2-Dimethyl-4-(4-isopropylphenyl)-4-oxobutyric acid

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

3-Methyl-5-oxo-5-(4-n-propylphenyl)valeric acid

2,2-Dimethyl-4-(3-methyl-2-thienyl)-4-oxobutyric acid

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

2,2-Dimethyl-4-(3,4-dimethylphenyl)-4-oxobutyric acid

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