3-Bromo-2-chloro-5-(difluoromethyl)pyridine-6-sulfonyl chloride
3-Bromo-4-chloro-2-(difluoromethyl)pyridine-6-sulfonyl chloride
5-Bromo-3-cyano-2-(difluoromethyl)pyridine-4-sulfonamide
2-Bromo-6-cyano-5-(difluoromethyl)pyridine-3-carboxylic acid
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