2-Bromo-3-cyano-4-(difluoromethyl)-6-hydroxypyridine
2-Bromo-3-cyano-4-(difluoromethyl)-5-hydroxypyridine
3-Bromo-6-chloro-2-(difluoromethyl)-4-hydroxypyridine
3-Bromo-6-chloro-2-(difluoromethyl)-5-hydroxypyridine
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