4,5-Difluoro-3-(difluoromethyl)-2-nitropyridine
2,6-Difluoro-3-(difluoromethyl)-5-nitropyridine
2,6-Difluoro-3-(difluoromethyl)-4-nitropyridine
3,6-Difluoro-2-(difluoromethyl)-5-nitropyridine
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