3-Cyano-6-(difluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine
2-(Chloromethyl)-6-fluoro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
4-Cyano-2-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
6-(Chloromethyl)-3-fluoro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde