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

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

5-(4-Isopropylphenyl)-3-methyl-5-oxovaleric acid

2,2-Dimethyl-4-oxo-4-(2,4,5-trimethylphenyl)butyric acid

2,2-Dimethyl-4-oxo-4-(2,3,4,5,6-pentamethylphenyl)butyric acid

2,2-Dimethyl-4-oxo-4-(3,4,5-trimethoxyphenyl)butyric acid

5-[3,4-(Ethylenedioxy)phenyl]-3-methyl-5-oxovaleric acid

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

2,2-Dimethyl-4-(5-fluoro-2-methylphenyl)-4-oxobutyric acid

2,2-Dimethyl-4-(5-fluoro-2-methoxyphenyl)-4-oxobutyric acid

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