2-Bromo-4-chloro-6-fluoro-3-(trifluoromethoxy)pyridine
3-Bromo-6-cyano-2-(trifluoromethoxy)pyridine-5-sulfonyl chloride
5-Bromo-2-cyano-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
4-Bromo-3-cyano-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
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