英文别名Ruxolitinib Impurity 8; 5-Pyrimidinecarboxylic acid, 4-amino-6-[1-[(1R)-2-cyano-1-cyclopentylethyl]-1H-pyrazol-4-yl]-; 4-amino-6-(1-(2-cyano-1-cyclopentylethyl)-1H-pyrazol-4-yl)pyrimidine-5-carboxylic acid; Lucotinib Impurity 5; Ruxolitinib Impurity 02; Impurity 2 of Luketinib; Lucitinib Impurity 7 
