2-(Difluoromethyl)-4-hydroxypyridine-5-carboxylic acid
2-(Difluoromethyl)-3-hydroxypyridine-4-carboxylic acid
3-(Difluoromethyl)-6-hydroxypyridine-2-carboxaldehyde
5-(Difluoromethyl)-2-hydroxypyridine-4-carboxaldehyde
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