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