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