4,8-dimethylquinolin-2(1H)-one

Also known as: 4,8-DIMETHYL-2-QUINOLINOL, 2(1H)-Quinolinone, 4,8-dimethyl-, 4,8-dimethyl-2-hydroxyquinoline, 4,8-dimethylcarbostyril, 4,8-dimethyl-1H-quinolin-2-one, 4,8-dimethylquinolin-2-ol, 2-Hydroxy-4,8-dimethyl-chinolin, 4,8-dimethyl-2(1H)-quinolinone, dimethylquinolinol

4,8-dimethylquinolin-2(1H)-one (CAS 5349-78-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11NO and a molecular weight of 173.21100 g/mol. Key properties include a melting point of 219-221ºC, a boiling point of 343.3ºC at 760 mmHg, a density of 1.107g/cm3 and a flash point of 201.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5349-78-0
Jingsj CID: J-1350380-5
Molecular Formula: C₁₁H₁₁NO
Molecular Weight: 173.21100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	219-221ºC
Boiling Point	343.3ºC at 760 mmHg
Density	1.107g/cm3
Flash Point	201.7ºC
Exact Mass	173.08400
PSA	33.12000
LogP	2.55720
Refractive Index	1.566

Customs & Trade Information

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. 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 4,8-dimethylquinolin-2(1H)-one?

The CAS number of 4,8-dimethylquinolin-2(1H)-one is 5349-78-0.

What are the molecular formula and molecular weight of 4,8-dimethylquinolin-2(1H)-one?

4,8-dimethylquinolin-2(1H)-one has molecular formula C11H11NO and molecular weight 173.21100 g/mol.

What are the upstream and downstream products of 4,8-dimethylquinolin-2(1H)-one?

For 4,8-dimethylquinolin-2(1H)-one, Upstream Products: 2'-Methylacetoacetanilide, o-Toluidine; Downstream Products: 2-Chloro-4,8-dimethylquinoline, 4,8-Dimethylquinoline-2-thiol.

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. "4,8-dimethylquinolin-2(1H)-one (CAS 5349-78-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1350380-5 (accessed 2026-11-09).

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