4-Chloro-2-(difluoromethyl)-3-hydroxypyridine-5-acetic acid
4-(Bromomethyl)-3-(difluoromethyl)-2-hydroxy-5-iodopyridine
2-(Difluoromethyl)-3-hydroxy-5-methoxy-6-methylpyridine
2-(Bromomethyl)-5-(difluoromethyl)-3-hydroxy-4-iodopyridine
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