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