5-Amino-2-(difluoromethyl)-3-iodopyridine-6-sulfonamide
4-Amino-3-(difluoromethyl)-6-iodopyridine-2-sulfonamide
4-Amino-6-(difluoromethyl)-2-iodopyridine-3-sulfonamide
6-Amino-2-cyano-4-(difluoromethyl)pyridine-3-sulfonamide
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