4-(Difluoromethyl)-5-hydroxy-3-nitropyridine-2-acetonitrile
4-(Chloromethyl)-5-(difluoromethyl)-3-hydroxy-2-(trifluoromethyl)pyridine
4-(Difluoromethyl)-6-hydroxy-3-nitropyridine-2-carboxamide
5-(Difluoromethyl)-3-hydroxy-4-nitropyridine-2-acetonitrile