3-Bromo-2-fluoro-6-(trifluoromethoxy)pyridine-4-sulfonamide
4-Bromo-6-(chloromethyl)-2-cyano-3-(trifluoromethoxy)pyridine
3-Bromo-2-(chloromethyl)-5-cyano-4-(trifluoromethoxy)pyridine
2-Bromo-6-(chloromethyl)-4-cyano-3-(trifluoromethoxy)pyridine
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