3-Bromo-6-cyano-4-(difluoromethyl)-2-nitropyridine
5-Bromo-2-cyano-3-(difluoromethyl)-6-nitropyridine
2-Bromo-4-cyano-3-(difluoromethyl)pyridine-5-carbonyl chloride
4-Bromo-5-cyano-2-(difluoromethyl)-3-nitropyridine
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