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