3-Cyano-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-carboxaldehyde
3-Chloro-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
3-Cyano-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxaldehyde
4-Cyano-3-nitro-6-(trifluoromethoxy)pyridine-2-carboxaldehyde