6-(4-t-Butylphenyl)-6-oxohexanoic acid

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

8-(3,4-Dimethoxyphenyl)-8-oxooctanoic acid

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

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

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

8-[2-Chloro-4-(methylthio)phenyl]-8-oxooctanoic acid

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

7-(2,3,4,5-tetrafluorophenyl)-7-oxoheptanoic acid

4-(2,3,4-trimethoxyphenyl)-4-oxobutyric acid

5-(2-(Methylthio)phenyl)-5-oxovaleric acid