5,6,7-Trimethoxyflavone

Also known as: Baicalein-5,6,7-trimethylether, Baicalein trimethyl ether, 2-Phenyl-5,6,7-trimethoxy-4H-1-benzopyran-4-one, 5,6,7-Trimethoxy-2-phenylchromen-4-one, 5,6,7-Trimethoxy-2-phenyl-4H-chromen-4-one

5,6,7-Trimethoxyflavone (CAS 973-67-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H16O5 and a molecular weight of 312.31700 g/mol. Key properties include a melting point of 165-167°C, a boiling point of 497.4ºC at 760 mmHg, a density of 1.242g/cm3 and a flash point of 221.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 973-67-1
Jingsj CID: J-18191-9
Molecular Formula: C₁₈H₁₆O₅
Molecular Weight: 312.31700 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	165-167°C
Boiling Point	497.4ºC at 760 mmHg
Density	1.242g/cm3
Flash Point	221.3ºC
Exact Mass	312.10000
PSA	57.90000
LogP	3.48580
Refractive Index	1.585

Activity & Biological Data

Target	p38-α MAPK[1]
Additional Information	[1]. Hassan AHE, et al. Repurposing mosloflavone/5,6,7-trimethoxyflavone-resveratrol hybrids: Discovery of novel p38-α MAPK inhibitors as potent interceptors of macrophage-dependent production of proinflammatory mediators. Eur J Med Chem. 2019 Jul 9;180:253-267.

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 5,6,7-Trimethoxyflavone?

The CAS number of 5,6,7-Trimethoxyflavone is 973-67-1.

What are the molecular formula and molecular weight of 5,6,7-Trimethoxyflavone?

5,6,7-Trimethoxyflavone has molecular formula C18H16O5 and molecular weight 312.31700 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. "5,6,7-Trimethoxyflavone (CAS 973-67-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18191-9 (accessed 2026-11-09).

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