3-(Difluoromethyl)-2-hydroxypyridine-4-carboxylic acid
6-(Difluoromethyl)-2-hydroxypyridine-3-carboxylic acid
2-(Difluoromethyl)-6-hydroxypyridine-4-carboxylic acid
2-(Difluoromethyl)-6-hydroxypyridine-3-carboxylic acid
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