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