3-(Difluoromethyl)-6-hydroxy-4-methoxypyridine-2-carboxamide
2-(Difluoromethyl)-5-hydroxy-3-methylpyridine-4-carboxamide
2-(Difluoromethyl)-4-hydroxy-6-methylpyridine-3-carboxamide
4-(Difluoromethyl)-5-hydroxy-2-methoxypyridine-3-carboxamide
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