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