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