3,4-Dibromo-2-(difluoromethyl)pyridine-6-sulfonyl chloride
3,6-Dibromo-2-(difluoromethyl)pyridine-4-sulfonyl chloride
2,3-Diamino-4-(difluoromethyl)pyridine-5-sulfonamide
2,3-Dibromo-6-(difluoromethyl)pyridine-4-sulfonyl chloride
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