8-[4-(N,N-Diethylamino)phenyl]-8-oxooctanoic acid

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

6-(4-n-Butylphenyl)-6-oxohexanoic acid

4-[2-(Methylthio)phenyl]-4-oxobutyric acid

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

5-(3-Fluoro-2-methylphenyl)-5-oxovaleric acid

5-(3-Chloro-4-methylphenyl)-5-oxovaleric acid

3-Methyl-5-(1-naphthyl)-5-oxovaleric acid

5-(2-(Ethylthio)phenyl)-3-methyl-5-oxovaleric acid

2,2-Dimethyl-4-(4-ethoxyphenyl)-4-oxobutyric acid

4-(4-n-Butylphenyl)-2,2-dimethyl-4-oxobutyric acid