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