英文别名Topiroxostat Impurity 21; 4-(5-pyridin-4-yl-1,3,4-oxadiazol-2-yl)pyridine-2-carbonitrile; 4-[5-(Pyridin-4-yl)-1,3,4-oxadiazol-2-yl]pyridine-2-carbonitrile; 2-Pyridinecarbonitrile, 4-[5-(4-pyridinyl)-1,3,4-oxadiazol-2-yl]-; Topiroxostat impurity 01 
