4-(2,5-Dichlorophenyl)-4-oxobutyric acid

6-(4-heptyloxyphenyl)-6-oxohexanoic acid

6-(2,4-Dimethoxyphenyl)-6-oxohexanoic acid

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

5-(3,5-Dimethoxyphenyl)-5-oxovaleric acid

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

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

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

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

7-(4-Chloro-2-fluorophenyl)-7-oxoheptanoic acid

7-[2-Chloro-4-(methylthio)phenyl]-7-oxoheptanoic acid