H-Pro-Arg-OH

Also known as: (2S)-5-(diaminomethylideneamino)-2-[[(2S)-pyrrolidine-2-carbonyl]amino]pentanoic acid, (2S)-5-[bis(azanyl)methylideneamino]-2-[[(2S)-pyrrolidin-2-yl]carbonylamino]pentanoic acid, (2S)-5-guanidino-2-[[(2S)-pyrrolidine-2-carbonyl]amino]valeric acid, (S)-5-Guanidino-2-((S)-pyrrolidine-2-carboxamido)pentanoic acid, L-Arginine, L-prolyl-, L-Arginine,L-prolyl, L-Arginine,N2-L-prolyl, L-Pro-L-Arg, L-prolyl-L-arginine, Pro-Arg, Pro-arg, Prolyl-arginine, prolylarginine

H-Pro-Arg-OH (CAS 2418-74-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H21N5O3 and a molecular weight of 271.32 g/mol. Key property: a density of 1.5g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 2418-74-8
Jingsj CID: J-1969462-3
Molecular Formula: C₁₁H₂₁N₅O₃
Molecular Weight: 271.32 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.5g/cm3
Exact Mass	271.16400
PSA	140.33000
LogP	0.48170
Refractive Index	1.653

Frequently Asked Questions

What is the CAS number of H-Pro-Arg-OH?

The CAS number of H-Pro-Arg-OH is 2418-74-8.

What are the molecular formula and molecular weight of H-Pro-Arg-OH?

H-Pro-Arg-OH has molecular formula C11H21N5O3 and molecular weight 271.32 g/mol.

What are the upstream and downstream products of H-Pro-Arg-OH?

For H-Pro-Arg-OH, Upstream Products: L-Arginine, N-(tert-Butoxycarbonyl)-L-proline N-hydroxysuccinimide ester.

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

Last updated: 8/21/2026

How to cite: Jingsj. "H-Pro-Arg-OH (CAS 2418-74-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969462-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.