3-Amino-2-cyano-4-(difluoromethyl)-5-iodopyridine
5-Amino-3-chloro-4-(difluoromethyl)pyridine-2-acetonitrile
3-Amino-5-chloro-2-(difluoromethyl)pyridine-4-acetonitrile
6-Amino-2-cyano-4-(difluoromethyl)-3-iodopyridine
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