6-(2-ethoxyphenyl)-6-oxohexanoic 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

8-(2-Chloro-4-fluorophenyl)-8-oxooctanoic acid

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

8-(4-Chloro-2-methoxyphenyl)-8-oxooctanoic acid

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