6-(2,4-difluorophenyl)-6-oxohexanoic acid

8-(2,6-difluorophenyl)-8-oxooctanoic acid

6-(2-fluorophenyl)-6-oxohexanoic acid

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

2,2-dimethyl-4-(2-methoxyphenyl)-4-oxobutyric acid

7-Cyclopropyl-7-oxoheptanoic acid

4-Cyclobutyl-4-oxobutyric acid

6-Oxo-octanoic acid

5-Oxo-heptanoic acid

5-Oxodecanoic acid

8-oxoundecanoic acid

4-(1-Oxo-2-phenylethyl)benzoic acid

2-(2-Oxopropyl)benzoic acid

4-(3-Bromo-4-methylphenyl)-4-oxobutyric acid

5-Methyl-4-oxohexanoic acid