3-Bromo-2-(chloromethyl)-4-iodo-6-(trifluoromethoxy)pyridine
3-Bromo-5-hydroxy-2-(trifluoromethoxy)pyridine-4-sulfonamide
4-Bromo-2-(fluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine
5-Bromo-2-fluoro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride