3-(Difluoromethyl)-2,5-dihydroxypyridine-6-carboxamide
3-(Difluoromethyl)-2,5-dihydroxypyridine-4-carboxamide
2-(Difluoromethyl)-4,6-dihydroxypyridine-3-carboxamide
6-(Difluoromethyl)-2,4-dihydroxypyridine-3-carboxamide
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