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