1,3-Dimethylquinoxalin-2(1H)-one

Also known as: 1,3-dimethylquinoxalin-2-one, 1,3-Dimethyl-2(1H)-quinoxalinone, 1,3-Dimethyl-1H-quinoxalin-2-one, 1,3-Dimethyl-1H-chinoxalin-2-on, 1,3-Dimethylquinoxaline-2(1H)-one, 2(1H)-Quinoxalinone, 1,3-dimethyl-, 1,3-dimethyl-2-oxoquinoxaline, 1,3-dimethylquinoxalin-2(1H)-one

1,3-Dimethylquinoxalin-2(1H)-one (CAS 3149-25-5) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C10H10N2O and a molecular weight of 174.19900 g/mol. Key properties include a boiling point of 303ºC at 760mmHg, a density of 1.18g/cm3 and a flash point of 137ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 3149-25-5
Jingsj CID: J-1443000-3
Molecular Formula: C₁₀H₁₀N₂O
Molecular Weight: 174.19900 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	303ºC at 760mmHg
Density	1.18g/cm3
Flash Point	137ºC
Exact Mass	174.07900
PSA	34.89000
LogP	1.24190
Refractive Index	1.608

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 1,3-Dimethylquinoxalin-2(1H)-one?

The CAS number of 1,3-Dimethylquinoxalin-2(1H)-one is 3149-25-5.

What are the molecular formula and molecular weight of 1,3-Dimethylquinoxalin-2(1H)-one?

1,3-Dimethylquinoxalin-2(1H)-one has molecular formula C10H10N2O and molecular weight 174.19900 g/mol.

What are the upstream and downstream products of 1,3-Dimethylquinoxalin-2(1H)-one?

For 1,3-Dimethylquinoxalin-2(1H)-one, Upstream Products: Pyruvic acid, N-Methyl-1,2-phenylenediamine, 3-Methyl-2(1H)-quinoxalinone.

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. "1,3-Dimethylquinoxalin-2(1H)-one (CAS 3149-25-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1443000-3 (accessed 2026-11-09).

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