3-(Difluoromethyl)-4,6-diiodo-2-nitropyridine
4,5-Diamino-3-(difluoromethyl)pyridine-2-acetonitrile
3-(Difluoromethyl)-2,4-diiodo-5-nitropyridine
2,6-Diamino-4-(difluoromethyl)pyridine-3-acetonitrile
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