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