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