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

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

6-oxo-6-(4-pentyloxyphenyl)hexanoic acid

8-(4-heptyloxyphenyl)-8-oxooctanoic acid

6-(2,6-Dimethoxyphenyl)-6-oxohexanoic acid

4-[3-(N,N-Dimethylamino)phenyl]-4-oxobutyric acid

7-[3-(N,N-Dimethylamino)phenyl]-7-oxoheptanoic acid

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

8-(4-Chloro-2-methoxyphenyl)-8-oxooctanoic acid

5-(2-Chloro-6-fluorophenyl)-5-oxovaleric acid

5-(2,3,4,5-tetrafluorophenyl)-5-oxovaleric acid