5-[4-(N,N-Diethylamino)phenyl]-5-oxovaleric acid

5-(2-Chloro-4,5-difluorophenyl)-5-oxovaleric acid

5-(3,4,5-trichlorophenyl)-5-oxovaleric acid

7-(2,4,5-trimethoxyphenyl)-7-oxoheptanoic acid

6-(4-n-Butylphenyl)-6-oxohexanoic acid

4-(2,3,5,6-Tetramethylphenyl)-4-oxobutyric acid

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

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

2,2-Dimethyl-4-oxo-4-(4-phenoxyphenyl)butyric acid

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

3-Methyl-5-oxo-5-(2,3,4,5,6-pentamethylphenyl)valeric acid