Ethyl 5-(difluoromethyl)-2-hydroxy-3-iodopyridine-4-acetate
Methyl 3-(difluoromethyl)-5-hydroxy-2-methylpyridine-6-acetate
Ethyl 2-(difluoromethyl)-3-hydroxy-4-iodopyridine-5-acetate
Ethyl 4-(difluoromethyl)-6-hydroxy-3-methylpyridine-2-acetate
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