2-Cyano-3-hydroxy-6-(trifluoromethoxy)pyridine-5-carboxaldehyde
2-Chloro-4-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-carboxaldehyde
3-Chloro-6-cyano-2-(difluoromethyl)-5-(trifluoromethoxy)pyridine
2-Cyano-3-hydroxy-5-(trifluoromethoxy)pyridine-4-carboxaldehyde