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

7-(3,5-Dimethoxyphenyl)-7-oxoheptanoic acid

5-[3-(N,N-Dimethylamino)phenyl]-5-oxovaleric acid

6-[3-(N,N-Dimethylamino)phenyl]-6-oxohexanoic acid

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

5-(4-Chloro-2-fluorophenyl)-5-oxovaleric acid

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

5-(2-Chloro-4-(methylthio)phenyl)-5-oxovaleric acid

4-[2-Chloro-4-(methylthio)phenyl]-4-oxobutyric acid

6-(2-Chloro-4,5-difluorophenyl)-6-oxohexanoic acid

6-(2,3,4,5-tetrafluorophenyl)-6-oxohexanoic acid