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