3'-O-Methylguanosine

Also known as: Guanosine, 3'-O-methyl-, 3'-OMe-G, 2-amino-9-[(2R,3R,4S,5R)-3-hydroxy-5-(hydroxymethyl)-4-methoxyoxolan-2-yl]-3H-purin-6-one

3'-O-Methylguanosine (CAS 10300-27-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C11H15N5O5 and a molecular weight of 297.26700 g/mol. Key properties include a boiling point of 711.7ºC at 760mmHg, a density of 1.98g/cm3 and a flash point of 384.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 10300-27-3
Jingsj CID: J-1955369-6
Molecular Formula: C₁₁H₁₅N₅O₅
Molecular Weight: 297.26700 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	711.7ºC at 760mmHg
Density	1.98g/cm3
Flash Point	384.2ºC
Exact Mass	297.10700
PSA	148.51000
Vapor Pressure	2.93E-21mmHg at 25°C
Refractive Index	1.829

Activity & Biological Data

Target	Human Endogenous Metabolite
Additional Information	[1]. B B Goswami, et al. Inhibition of vaccinia virus growth and virus-specific RNA synthesis by 3'-O-methyl adenosine and 3'-O-methyl guanosine. J Virol. 1983 Mar;45(3):1164-7.

Frequently Asked Questions

What is the CAS number of 3'-O-Methylguanosine?

The CAS number of 3'-O-Methylguanosine is 10300-27-3.

What are the molecular formula and molecular weight of 3'-O-Methylguanosine?

3'-O-Methylguanosine has molecular formula C11H15N5O5 and molecular weight 297.26700 g/mol.

What are the upstream and downstream products of 3'-O-Methylguanosine?

For 3'-O-Methylguanosine, Upstream Products: Trimethylsulfonium hydroxide, Guanosine, Diazomethane.

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. "3'-O-Methylguanosine (CAS 10300-27-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1955369-6 (accessed 2026-11-09).

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