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