4-Bromo-3-(difluoromethyl)-6-fluoro-2-nitropyridine
4-Bromo-3-(difluoromethyl)-5-fluoro-2-nitropyridine
4-Bromo-3-(difluoromethyl)-2-fluoro-5-nitropyridine
4-Bromo-2-(difluoromethyl)-6-fluoro-3-nitropyridine
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