8-(2,3,4,5-tetrafluorophenyl)-8-oxooctanoic acid

8-(2,4,5-trimethoxyphenyl)-8-oxooctanoic acid

4-(3-Methyl-2-thienyl)-4-oxobutyric acid

5-(4-tert-Butyl-2,6-dimethylphenyl)-5-oxovaleric acid

5-(5-Fluoro-2-methoxyphenyl)-5-oxovaleric acid

2,2-Dimethyl-4-(1-naphthyl)-4-oxobutyric acid

2,2-Dimethyl-4-[4-(N,N-Dimethylamino)phenyl]-4-oxobutyric acid

3-Methyl-5-oxo-5-(2,4,6-trimethylphenyl)valeric acid

5-(3,5-Dimethyl-4-methoxyphenyl)-3-methyl-5-oxovaleric acid

3-Methyl-5-[3,4-(methylenedioxy)phenyl]-5-oxovaleric acid

5-(2,5-Dimethylphenyl)-3-methyl-5-oxovaleric acid