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