5-(2,5-Dimethoxyphenyl)-5-oxovaleric acid

4-(3,4,5-trimethoxyphenyl)-4-oxobutyric acid

7-(2,3,4,5-tetrafluorophenyl)-7-oxoheptanoic acid

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

7-(2,3,4-trimethoxyphenyl)-7-oxoheptanoic acid

4-(3-Methyl-2-thienyl)-4-oxobutyric acid

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

4-(2,4,5-Trimethylphenyl)-4-oxobutyric acid

4-(4-Chloro-2-methylphenyl)-4-oxobutyric acid

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

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