英文别名Tofacitinib impurity T; 2-cyano-N-methyl-N-((3R,4R)-4-methyl-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)piperidin-3-yl)acetamide; Tofacitinib Impurity 23; Tofacitinib-22; Acetamide, 2-cyano-N-methyl-N-[(3R,4R)-4-methyl-1-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-3-piperidinyl]- 
