英文别名Tofacitinib Impurity 93; 1-Piperidinepropanoic acid, 4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-beta-oxo-, methyl ester, (3R,4R)-; Methyl (3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-beta-oxo-1-piperidinepropanoate; Tofacitinib-28; Tofacitinib impurity 22; 1-Piperidinepropanoic acid, 4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-, methyl ester, (3R,4R); Azilsartan medoxomil impurity329; methyl 3-(4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-3-oxopropanoate; Tofatinib Impurity 26; Tofacitinib Impurity 29 
