8-(2,4-dichlorophenyl)-8-oxooctanoic acid

6-(2,5-dichlorophenyl)-6-oxohexanoic acid

4-oxo-4-(4-n-pentylphenyl)butyric acid

7-oxo-7-(4-n-pentylphenyl)heptanoic acid

5-(2-Ethoxyphenyl)-5-oxovaleric acid

8-(2-ethoxyphenyl)-8-oxooctanoic acid

8-oxo-8-(4-n-propoxyphenyl)octanoic acid

4-Oxo-4-(4-isopropoxyphenyl)butyric acid

4-(4-heptyloxyphenyl)-4-oxobutyric acid

7-(4-hexyloxyphenyl)-7-oxoheptanoic acid

5-(2,4-Dimethoxyphenyl)-5-oxovaleric acid