3-Bromo-4-(difluoromethyl)-6-hydroxypyridine-2-sulfonamide
4-Bromo-5-cyano-3-(difluoromethyl)pyridine-2-carboxylic acid
4-Bromo-3-cyano-2-(difluoromethyl)pyridine-6-carboxylic acid
3-Bromo-4-(difluoromethyl)-5-hydroxypyridine-2-sulfonamide
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