2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one

Also known as: 4H-1-Benzopyran-4-one,2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxy-, Quercetin 3,3',4'-trimethyl ether, quercetin 3,3',4'-tri-O-methyl ether, 5,7-Dihydroxy-3,3',4'-trimethoxyflavone, UNII-429X56Q8K5, 2-(3,4-Dimethoxyphenyl)-5,7-dihydroxy-3-methoxy-4H-chromen-4-one

2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one (CAS 14549-84-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H16O7 and a molecular weight of 344.31500 g/mol. Key properties include a boiling point of 571.1ºC at 760mmHg, a density of 1.45g/cm3 and a flash point of 209.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 14549-84-9
Jingsj CID: J-1498745-2
Molecular Formula: C₁₈H₁₆O₇
Molecular Weight: 344.31500 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	571.1ºC at 760mmHg
Density	1.45g/cm3
Flash Point	209.7ºC
Exact Mass	344.09000
PSA	98.36000
LogP	2.89700
Vapor Pressure	1.21E-13mmHg at 25°C
Refractive Index	1.653

Customs & Trade Information

HS Code	2914509090
Summary	HS:2914509090 other ketones with other oxygen function VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one?

The CAS number of 2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one is 14549-84-9.

What are the molecular formula and molecular weight of 2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one?

2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one has molecular formula C18H16O7 and molecular weight 344.31500 g/mol.

What are the upstream and downstream products of 2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one?

For 2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one, Upstream Products: 2-Methoxy-1-(2,4,6-trihydroxyphenyl)ethanone, 3,4-Dimethoxybenzoic anhydride, Veratric acid.

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. "2-(3,4-dimethoxyphenyl)-5,7-dihydroxy-3-methoxychromen-4-one (CAS 14549-84-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498745-2 (accessed 2026-11-09).

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