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

7-oxo-7-(4-pentyloxyphenyl)heptanoic acid

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

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

7-(2,6-Dimethoxyphenyl)-7-oxoheptanoic acid

6-(3,5-Dimethoxyphenyl)-6-oxohexanoic acid

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

6-(5-Chloro-2-methoxyphenyl)-6-oxohexanoic acid

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

7-(2-Chloro-6-fluorophenyl)-7-oxoheptanoic acid

7-(3,4,5-trichlorophenyl)-7-oxoheptanoic acid