2-Cyano-3-(difluoromethyl)-6-hydroxy-5-methylpyridine
6-(Bromomethyl)-2-cyano-4-(difluoromethyl)-3-hydroxypyridine
2-(Bromomethyl)-6-cyano-3-(difluoromethyl)-4-hydroxypyridine
5-(Difluoromethyl)-2-fluoro-3-hydroxypyridine-6-carbonyl chloride
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