2-(Chloromethyl)-3-hydroxy-6-methoxy-4-(trifluoromethoxy)pyridine
4-Hydroxy-6-iodo-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
3-(Bromomethyl)-6-hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine
6-Hydroxy-4-iodo-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride