3-(Bromomethyl)-6-cyano-4-nitro-2-(trifluoromethoxy)pyridine
5-(Bromomethyl)-2-cyano-3-nitro-4-(trifluoromethoxy)pyridine
5-Cyano-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-Cyano-6-nitro-3-(trifluoromethoxy)pyridine-4-carboxaldehyde