英文别名Ethyl 3-((3R,4R)-4-methyl-3-(methyl(7h-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-3-oxopropanoate; 1-Piperidinepropanoic acid, 4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-β-oxo-, ethyl ester, (3R,4R); Ethyl 3-{(3R,4R)-4-methyl-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-1-piperidinyl}-3-oxopropanoate; ethyl 3-[(3R,4R)-4-methyl-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]piperidin-1-yl]-3-oxopropanoate; Ethyl (3R,4R)-4-methyl-3-(methyl-7H-pyrrolo(2,3-d)pyrimidin-4-ylamino)-beta-oxo-1-piperidinepropanoate; ethyl 3-[(3R,4R)-4-methyl-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-1-piperidyl]-3-oxo-propanoate; 3-{4-Methyl-3-[methyl-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-amino]-piperidin-1-yl}-3-oxo-propionic acid ethyl ester; Tofacitinib impurity 23 
