2-Cyano-3-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine
3-Cyano-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetonitrile
Ethyl 6-cyano-2-nitro-4-(trifluoromethoxy)pyridine-3-acetate
3-Cyano-6-(fluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine