3-Bromo-4-(difluoromethyl)-2-hydroxy-6-nitropyridine
3-Bromo-2-(difluoromethyl)-6-hydroxy-5-nitropyridine
3-Bromo-2-(difluoromethyl)-5-hydroxy-6-nitropyridine
4-Bromo-5-(difluoromethyl)-3-hydroxy-2-methylpyridine
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