4-Chloro-2-(difluoromethyl)-5-hydroxypyridine-3-carboxaldehyde
4-Chloro-2-(difluoromethyl)-3-hydroxy-6-iodopyridine
4-Chloro-2-(difluoromethyl)-3-hydroxypyridine-5-carboxaldehyde
5-Chloro-3-(difluoromethyl)-2-hydroxy-4-iodopyridine
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