6-(2,3-Dichlorophenyl)-6-oxohexanoic acid

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

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

4-Oxo-4-(4-isopropoxyphenyl)butyric acid

4-(4-heptyloxyphenyl)-4-oxobutyric acid

7-(4-hexyloxyphenyl)-7-oxoheptanoic acid

5-(2,4-Dimethoxyphenyl)-5-oxovaleric acid

8-(2,5-Dimethoxyphenyl)-8-oxooctanoic acid

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

8-(3,5-Dimethoxyphenyl)-8-oxooctanoic acid

6-[4-(N,N-Dimethylamino)phenyl]-6-oxohexanoic acid