8-(4-ethylphenyl)-8-oxooctanoic acid

4-(2-Methyl-5-fluorophenyl)-4-oxobutyric acid

6-(3,5-Dimethoxyphenyl)-6-oxohexanoic acid

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

7-[4-(N,N-Diethylamino)phenyl]-7-oxoheptanoic acid

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

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

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

8-(2-Chloro-6-fluorophenyl)-8-oxooctanoic acid

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

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