Pemetrexed

培美曲塞

Also known as: Pemetrexed acid, N-[4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid, LY231514, Alimta (free acid), N-[4-[2-(2-Amino-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid, (S)-2-(4-(2-(2-Amino-4-oxo-4,7-dihydro-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzamido)pentanedioic acid, MFCD00902635

Pemetrexed (CAS 137281-23-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H21N5O6 and a molecular weight of 427.411 g/mol. It is also known as Pemetrexed acid, N-[4-[2-(2-Amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid and LY231514. Key property: a density of 1.6±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
137281-23-3
Jingsj CID
J-36699-3
Molecular Formula
C20H21N5O6
Chinese Name
培美曲塞
Molecular Weight
427.411 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Density1.6±0.1 g/cm3

Frequently Asked Questions

What is the CAS number of Pemetrexed?

The CAS number of Pemetrexed is 137281-23-3.

What are the molecular formula and molecular weight of Pemetrexed?

Pemetrexed has molecular formula C20H21N5O6 and molecular weight 427.411 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Pemetrexed (CAS 137281-23-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-36699-3 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.