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