4-(Chloromethyl)-2-(difluoromethyl)-3-nitropyridine
3,4-Diamino-2-(difluoromethyl)pyridine-5-acetonitrile
4-Cyano-2-(difluoromethyl)pyridine-5-methanol
2,6-Diamino-3-(difluoromethyl)pyridine-4-acetonitrile
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