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