3-Bromo-2-(difluoromethyl)-4,6-dihydroxypyridine
5-Bromo-3-(difluoromethyl)-2,4-dihydroxypyridine
3-Bromo-6-(difluoromethyl)-2,4-dihydroxypyridine
3-Bromo-5-(difluoromethyl)-2,4-dihydroxypyridine
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