6-(Chloromethyl)-4-iodo-3-nitro-2-(trifluoromethoxy)pyridine
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