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