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