3,4-dimethylchromen-2-one

Also known as: 3,4-Dimethylcoumarin, 3,4-Dimethyl-2H-chromen-2-one, 2H-1-Benzopyran-2-one, 3,4-dimethyl-, 3,4-Dimethyl-2-chromenone

3,4-dimethylchromen-2-one (CAS 4281-39-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H10O2 and a molecular weight of 174.19600 g/mol. Key properties include a boiling point of 303.9ºC at 760 mmHg, a density of 1.138g/cm3 and a flash point of 124ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4281-39-4
Jingsj CID: J-37595-1
Molecular Formula: C₁₁H₁₀O₂
Molecular Weight: 174.19600 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	303.9ºC at 760 mmHg
Density	1.138g/cm3
Flash Point	124ºC
Exact Mass	174.06800
PSA	30.21000
LogP	2.40980
Refractive Index	1.555

Customs & Trade Information

HS Code	2932209090
Summary	2932209090. other lactones. 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 3,4-dimethylchromen-2-one?

The CAS number of 3,4-dimethylchromen-2-one is 4281-39-4.

What are the molecular formula and molecular weight of 3,4-dimethylchromen-2-one?

3,4-dimethylchromen-2-one has molecular formula C11H10O2 and molecular weight 174.19600 g/mol.

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. "3,4-dimethylchromen-2-one (CAS 4281-39-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37595-1 (accessed 2026-11-09).

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