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