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