2-Chloro-3-(difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
3-Chloro-4-(chloromethyl)-5-iodo-2-(trifluoromethoxy)pyridine
2-Chloro-3-(difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine
3-Chloro-2-(chloromethyl)-6-iodo-5-(trifluoromethoxy)pyridine