4-Amino-6-(difluoromethyl)-3-iodopyridine-2-carboxylic acid
4-Amino-2-(difluoromethyl)-3-iodopyridine-5-carboxylic acid
6-Amino-4-(bromomethyl)-3-(difluoromethyl)-2-iodopyridine
2-Amino-4-(bromomethyl)-3-(difluoromethyl)-5-iodopyridine
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