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
2-Fluoro-5-methyl-6-(trifluoromethoxy)pyridine-3-sulfonamide