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