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