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