3-Cyano-5-(difluoromethyl)-2-iodopyridine-6-carboxamide
3-Chloro-6-(difluoromethyl)-2-nitropyridine-5-carboxamide
3-Cyano-4-(difluoromethyl)-6-iodopyridine-2-carboxamide
4-Chloro-3-(difluoromethyl)-2-nitropyridine-6-carboxamide
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