2'-O-Methylinosine

Also known as: 2'-(o-methyl)-inosine, 2'-OMe Inosine, 2'-OMe-I, 2'-OMe-Ir, O2'-methyl-inosine, 9-[(2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxyoxolan-2-yl]-3H-purin-6-one, Inosine, 2'-O-methyl-

2'-O-Methylinosine (CAS 3881-21-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H14N4O5 and a molecular weight of 282.25 g/mol. Key properties include a boiling point of 669.568ºC at 760 mmHg, a density of 1.844g/cm3 and a flash point of 358.742ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3881-21-8
Jingsj CID: J-1957893-9
Molecular Formula: C₁₁H₁₄N₄O₅
Molecular Weight: 282.25 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	669.568ºC at 760 mmHg
Density	1.844g/cm3
Flash Point	358.742ºC
Exact Mass	282.09600
PSA	122.49000
Appearance	Powder \| White to Off-white
Refractive Index	1.774
Additional Property	Slightly soluble in water.

Activity & Biological Data

Additional Information	[1]. Robak T, Robak P. Purine nucleoside analogs in the treatment of rarer chronic lymphoid leukemias. Curr Pharm Des. 2012;18(23):3373-88.

Frequently Asked Questions

What is the CAS number of 2'-O-Methylinosine?

The CAS number of 2'-O-Methylinosine is 3881-21-8.

What are the molecular formula and molecular weight of 2'-O-Methylinosine?

2'-O-Methylinosine has molecular formula C11H14N4O5 and molecular weight 282.25 g/mol.

What are the upstream and downstream products of 2'-O-Methylinosine?

For 2'-O-Methylinosine, Upstream Products: 2'-O-Methyladenosine, Adenosine.

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. "2'-O-Methylinosine (CAS 3881-21-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1957893-9 (accessed 2026-11-09).

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