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