4-Bromo-3-(difluoromethyl)-6-hydroxypyridine-2-carboxamide
3-Amino-2-(difluoromethyl)-4-nitropyridine-6-carboxamide
3-Bromo-4-(difluoromethyl)-2-hydroxypyridine-6-carboxamide
2-Amino-3-(difluoromethyl)-4-nitropyridine-6-carboxamide
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