4-(2,6-Difluorophenyl)-4-oxobutyric acid

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

7-(4-biphenyl)-7-oxoheptanoic acid

4-(3,5-Difluorophenyl)-2,2-dimethyl-4-oxobutyric acid

6-Cyclohexyl-6-oxohexanoic acid

7-cyclopentyl-7-oxoheptanoic acid

5-Cyclopentyl-5-oxovaleric acid

8,8-dimethyl-7-oxononanoic acid

8-oxotridecanoic acid

7-oxoundecanoic acid

5-Oxo-5-(4-pyridyl)valeric acid