6-(Difluoromethyl)-2,3-dihydroxy-4-methoxypyridine
5-(Difluoromethyl)-2,3-dihydroxy-6-methoxypyridine
5-(Difluoromethyl)-2,3-dihydroxy-4-methoxypyridine
4-(Difluoromethyl)-2,3-dihydroxy-6-methoxypyridine
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