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