2-(2-Oxo-2-phenylethyl)benzoic acid

7-(2,3-dichlorophenyl)-7-oxoheptanoic acid

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

8-(4-t-Butylphenyl)-8-oxooctanoic acid

5-(2-Ethoxyphenyl)-5-oxovaleric acid

7-(4-ethoxyphenyl)-7-oxoheptanoic acid

4-(4-hexyloxyphenyl)-4-oxobutyric acid

8-(4-hexyloxyphenyl)-8-oxooctanoic acid

7-(2,3-Dimethoxyphenyl)-7-oxoheptanoic acid

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

5-[4-(N,N-Diethylamino)phenyl]-5-oxovaleric acid