2-Bromo-3-(chloromethyl)-6-(difluoromethyl)-4-hydroxypyridine
4-Bromo-2-(bromomethyl)-3-(difluoromethyl)-6-hydroxypyridine
5-Bromo-3-(bromomethyl)-2-(difluoromethyl)-4-hydroxypyridine
2-Bromo-3-(chloromethyl)-5-(difluoromethyl)-4-hydroxypyridine
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