英文别名Tofacitinib Impurity 51; 6,7-Dihydro-N-methyl-N-[(3R,4R)-4-methyl-3-piperidinyl]-5H-pyrrolo[2,3-d]pyrimidin-4-amine; TOFACITINIB CITRATE IMPURITY 70; (3R,4R)-N,4-dimethyl-N-{5H,6H,7H-pyrrolo[2,3-d]pyrimidin-4-yl}piperidin-3-amine; Tofacitinib Related Compound 23; Tofacitinib Hydrogenation Impurities; (6,7-Dihydro-5H-pyrrolo[2,3-d]pyrimidin-4-yl)-methyl-(4-methyl-piperidin-3-yl)-amine; Tofatinib Impurity 17