2-(Difluoromethyl)-3-hydroxy-4-(trifluoromethoxy)pyridine-6-methanol
3-(Difluoromethyl)-6-hydroxy-2-(trifluoromethoxy)pyridine-5-acetonitrile
5-(Difluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine-6-acetonitrile
3-Hydroxy-4-iodo-2-(trifluoromethoxy)pyridine-6-acetic acid