4-Cyano-3-(fluoromethyl)-2-nitro-5-(trifluoromethoxy)pyridine
4-Chloro-5-nitro-2-(trifluoromethoxy)pyridine-3-methanol
4-Cyano-6-(fluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine
3-Cyano-5-(difluoromethyl)-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine