3-Cyano-2-nitro-5-(trifluoromethoxy)pyridine-6-carboxaldehyde
4-Cyano-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxaldehyde
Ethyl 6-(chloromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-4-carboxylate
4-Cyano-3-(difluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxaldehyde