3-Cyano-6-(difluoromethyl)-2-iodo-4-(trifluoromethoxy)pyridine
5-Cyano-2-(difluoromethyl)-4-iodo-3-(trifluoromethoxy)pyridine
4-Cyano-5-(difluoromethyl)-2-iodo-3-(trifluoromethoxy)pyridine
4-Cyano-3-(difluoromethyl)-5-iodo-2-(trifluoromethoxy)pyridine