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