6-Hydroxy-3-methyl-2-(trifluoromethoxy)pyridine-4-acetonitrile
3-(Difluoromethyl)-6-hydroxy-2-methyl-4-(trifluoromethoxy)pyridine
2-Hydroxy-5-methyl-3-(trifluoromethoxy)pyridine-6-acetonitrile
5-(Difluoromethyl)-2-hydroxy-4-methyl-3-(trifluoromethoxy)pyridine