英文别名Ruxolitinib Impurity 9; 1H-Pyrazole-1-propanenitrile, 4-(6-amino-5-formyl-4-pyrimidinyl)-β-cyclopentyl-, (βR)-; 3-(4-(6-amino-5-formylpyrimidin-4-yl)-1H-pyrazol-1-yl)-3-cyclopentylpropanenitrile; Lucotinib Impurity 4; Ruxolitinib Impurity 03; Lucitinib Impurity 15