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