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