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