4-Amino-6-(difluoromethyl)-2,3-dihydroxypyridine
4-Amino-5-(difluoromethyl)-2,3-dihydroxypyridine
3,5-Difluoro-4-(difluoromethyl)-2-hydroxypyridine
3,5-Difluoro-2-(difluoromethyl)-6-hydroxypyridine
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