4-(Bromomethyl)-5-hydroxy-2-nitro-3-(trifluoromethoxy)pyridine
3-Iodo-2-methyl-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
4-(Bromomethyl)-3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine
6-Iodo-2-methyl-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine