6-(3,4-difluorophenyl)-6-oxohexanoic acid

7-(2,3-difluorophenyl)-7-oxoheptanoic acid

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

6-(4-biphenyl)-6-oxohexanoic acid

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

6-Cyclopentyl-6-oxohexanoic acid

8,8-dimethyl-7-oxononanoic acid

9,9-Dimethyl-8-oxodecanoic acid

3-(1,3-Dioxan-2-yl)propionic acid

2-(2-Oxopropyl)benzoic acid

6-(3-bromo-4-methylphenyl)-6-oxohexanoic acid