2-(Chloromethyl)-5-(difluoromethyl)-3,6-dihydroxypyridine
2-(Chloromethyl)-4-(difluoromethyl)-3,6-dihydroxypyridine
4-(Chloromethyl)-2-(difluoromethyl)-3,6-dihydroxypyridine
4-(Chloromethyl)-3-(difluoromethyl)-2,5-dihydroxypyridine
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