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