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