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