4-(Difluoromethyl)-5-iodopyridine-2-acetic acid
5-(Chloromethyl)-4-(difluoromethyl)pyridine-2-carboxylic acid
4-(Difluoromethyl)-2-iodopyridine-6-acetic acid
5-(Difluoromethyl)-3-iodopyridine-2-acetic acid
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