3-(Difluoromethyl)-6-iodo-4-nitro-2-(trifluoromethoxy)pyridine
3-(Bromomethyl)-5-iodo-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
2-(Chloromethyl)-3-iodo-4-nitro-5-(trifluoromethoxy)pyridine
5-(Difluoromethyl)-2-iodo-3-nitro-4-(trifluoromethoxy)pyridine