8-(2,4,5-trimethoxyphenyl)-8-oxooctanoic acid

7-(4-n-Propylphenyl)-7-oxoheptanoic acid

5-(2,3,5,6-Tetramethylphenyl)-5-oxovaleric acid

4-(3-Fluoro-2-methylphenyl)-4-oxobutyric acid

5-(3-Chloro-4-methylphenyl)-5-oxovaleric acid

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

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

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

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

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

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

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

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

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

4-[4-(2-Methoxyethoxy)phenyl]-4-oxobutyric acid