2-Cyano-4-(difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine
4-(Chloromethyl)-2-cyano-3-iodo-6-(trifluoromethoxy)pyridine
2-Cyano-5-iodo-6-(trifluoromethoxy)pyridine-3-carboxylic acid
2-Cyano-3-(difluoromethyl)-6-nitro-5-(trifluoromethoxy)pyridine