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