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