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