4-(2,3,5,6-Tetramethylphenyl)-4-oxobutyric acid

5-(2-Methoxy-5-methylphenyl)-5-oxovaleric acid

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

2,2-Dimethyl-4-oxo-4-(4-phenoxyphenyl)butyric acid

2,2-Dimethyl-4-oxo-4-(4-n-propylphenyl)butyric acid

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

2,2-Dimethyl-4-[3,4-(methylenedioxy)phenyl]-4-oxobutyric acid

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

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

2,2-Dimethyl-4-(3-methoxy-4-methylphenyl)-4-oxobutyric acid

8-(2-chlorophenyl)-8-oxooctanoic acid