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