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