Fosaprepitant

福沙吡坦

Also known as: L-758298, MK-0517, Emend IV, [3-[[(2R,3S)-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-3-(4-fluorophenyl)-4-morpholinyl]methyl]-2,5-dihydro-5-oxo-1H-1,2,4-triazol-1-yl]phosphonic acid, UNII-6L8OF9XRDC

Fosaprepitant (CAS 172673-20-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C23H22F7N4O6P and a molecular weight of 614.407 g/mol. It is also known as L-758298, MK-0517 and Emend IV. Key properties include a boiling point of 588.9ºC at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 310ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
172673-20-0
Jingsj CID
J-1979143-4
Molecular Formula
C23H22F7N4O6P
Chinese Name
福沙吡坦
Molecular Weight
614.407 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point588.9ºC at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point310ºC

Frequently Asked Questions

What is the CAS number of Fosaprepitant?

The CAS number of Fosaprepitant is 172673-20-0.

What are the molecular formula and molecular weight of Fosaprepitant?

Fosaprepitant has molecular formula C23H22F7N4O6P and molecular weight 614.407 g/mol.

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

Last updated:

How to cite: Jingsj. "Fosaprepitant (CAS 172673-20-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1979143-4 (accessed 2026-10-25).

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