3-Chloro-4-(difluoromethyl)-5-hydroxypyridine-2-carboxaldehyde
3-Chloro-2-(difluoromethyl)-6-hydroxy-5-iodopyridine
3-Chloro-4-(difluoromethyl)-2-hydroxypyridine-5-carboxaldehyde
3-Bromo-2-(bromomethyl)-4-(difluoromethyl)pyridine-6-carboxylic acid
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