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