7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one

Also known as: 7-Hydroxy-3,4,8-trimethylcoumarin, 3,4,8-Trimethylumbelliferone, 7-Hydroxy-3,4,8-trimethyl-2-chromenone, 7-Hydroxy-3,4,8-trimethyl-chromen-2-one, 7-Hydroxy-3,4,8-trimethylchromen-2-one, 2H-1-Benzopyran-2-one, 7-hydroxy-3,4,8-trimethyl-, MFCD00011569

7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one (CAS 91963-11-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C12H12O3 and a molecular weight of 204.22200 g/mol. Key properties include a melting point of 278-280ºC(lit.), a boiling point of 378.1ºC at 760mmHg, a density of 1.217g/cm3 and a flash point of 167ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 91963-11-0
Jingsj CID: J-4755-2
Molecular Formula: C₁₂H₁₂O₃
Molecular Weight: 204.22200 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	278-280ºC(lit.)
Boiling Point	378.1ºC at 760mmHg
Density	1.217g/cm3
Flash Point	167ºC
Exact Mass	204.07900
PSA	50.44000
LogP	2.42380
Refractive Index	1.58

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 7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one?

The CAS number of 7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one is 91963-11-0.

What are the molecular formula and molecular weight of 7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one?

7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one has molecular formula C12H12O3 and molecular weight 204.22200 g/mol.

What are the upstream and downstream products of 7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one?

For 7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one, Upstream Products: Ethyl 2-methylacetoacetate, 2-Methylresorcinol.

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. "7-Hydroxy-3,4,8-trimethyl-2H-chromen-2-one (CAS 91963-11-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4755-2 (accessed 2026-11-09).

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