6-(2,5-Dimethoxyphenyl)-6-oxohexanoic acid

8-(3,4,5-trimethoxyphenyl)-8-oxooctanoic acid

7-(4-n-Butylphenyl)-7-oxoheptanoic acid

7-(4-n-Propylphenyl)-7-oxoheptanoic acid

4-(3-Ethoxyphenyl)-4-oxobutyric acid

5-(2,4,6-Trimethylphenyl)-5-oxovaleric acid

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

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

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

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

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