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