2-(Aminomethyl)-3-(difluoromethyl)-4,5-dihydroxypyridine
3-(Difluoromethyl)-2,4-dimethoxy-5-hydroxypyridine
6-(Difluoromethyl)-2,3-dimethoxy-5-hydroxypyridine
6-(Difluoromethyl)-2,3-dimethoxy-4-hydroxypyridine
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