8-(3-bromo-4-methylphenyl)-8-oxooctanoic acid

8-(2,5-dichlorophenyl)-8-oxooctanoic acid

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

6-(4-Ethoxyphenyl)-6-oxohexanoic acid

4-oxo-4-(4-pentyloxyphenyl)butyric acid

6-(4-hexyloxyphenyl)-6-oxohexanoic acid

7-(2,4-Dimethoxyphenyl)-7-oxoheptanoic acid

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

8-[4-(N,N-Dimethylamino)phenyl]-8-oxooctanoic acid

6-[4-(N,N-Dimethylamino)phenyl]-6-oxohexanoic acid

6-(2-Chloro-4-fluorophenyl)-6-oxohexanoic acid