1-[(3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-1-piperidinyl]ethanone

1-[(3R,4R)-4-甲基-3-(甲基-7H-吡咯并[2,3-d]嘧啶-4-基氨基)-1-哌啶基]乙酮

Also known as: Tofacitinib Impurity E, Tofacitinib Impurity Z, 1-{(3R,4R)-4-Methyl-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-1-piperidinyl}ethanone, 1-((3R,4R)-4-methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)ethanone, Ethanone, 1-[(3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-1-piperidinyl]-

1-[(3R,4R)-4-methyl-3-(methyl-7H-pyrrolo[2,3-d]pyrimidin-4-ylamino)-1-piperidinyl]ethanone (CAS 477600-76-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H21N5O and a molecular weight of 287.360 g/mol. It is also known as Tofacitinib Impurity E, Tofacitinib Impurity Z and 1-{(3R,4R)-4-Methyl-3-[methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino]-1-piperidinyl}ethanone. Key property: a density of 1.2±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

477600-76-3

Jingsj CID

J-1527971-2

Molecular Formula

C₁₅H₂₁N₅O

Chinese Name

1-[(3R,4R)-4-甲基-3-(甲基-7H-吡咯并[2,3-d]嘧啶-4-基氨基)-1-哌啶基]乙酮

Molecular Weight

287.360 g/mol

Category

Pharma Intermediates

Last updated

8/21/2026