2-Bromo-5-(difluoromethyl)-3-nitropyridine-4-sulfonamide
5-Bromo-2-(difluoromethyl)-3-nitropyridine-6-acetonitrile
2-Bromo-4-(difluoromethyl)-6-nitropyridine-3-sulfonamide
4-Bromo-5-(difluoromethyl)-2-nitropyridine-3-acetonitrile
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