Methyl 2-hydroxy-6-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-acetate
3-(Difluoromethyl)-4-hydroxy-6-(trifluoromethoxy)pyridine-2-acetonitrile
3-(Difluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine-4-acetonitrile
3-(Difluoromethyl)-2-hydroxy-4-(trifluoromethoxy)pyridine-6-acetonitrile