4',7-Dimethoxyisoflavone

Also known as: Daidzein dimethyl ether, 7-Methoxy-3-(4-methoxyphenyl)chromen-4-one, 7-Methoxy-3-(4-methoxyphenyl)-4H-chromen-4-one, 4',7-Dimethoxyisoflavone, 7,4'-Dimethoxyisoflavone, 7-Methoxy-3-(4-methoxyphenyl)chromone, Dimethyldiadzein

4',7-Dimethoxyisoflavone (CAS 1157-39-7) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C17H14O4 and a molecular weight of 282.29100 g/mol. Key properties include a melting point of 161-163°C, a boiling point of 452.8ºC at 760mmHg, a density of 1.242g/cm3 and a flash point of 202.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1157-39-7
Jingsj CID: J-5906-3
Molecular Formula: C₁₇H₁₄O₄
Molecular Weight: 282.29100 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	161-163°C
Boiling Point	452.8ºC at 760mmHg
Density	1.242g/cm3
Flash Point	202.2ºC
Exact Mass	282.08900
PSA	48.67000
LogP	3.47720
Vapor Pressure	2.18E-08mmHg at 25°C
Refractive Index	1.598

Activity & Biological Data

Additional Information	[1]. M. K. Pandey, et al. Antifungal Activity of 4',7-Dimethoxyisoflavone Against Some Fungi. Mycobiology 30(1): 55-56 (2002).

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 4',7-Dimethoxyisoflavone?

The CAS number of 4',7-Dimethoxyisoflavone is 1157-39-7.

What are the molecular formula and molecular weight of 4',7-Dimethoxyisoflavone?

4',7-Dimethoxyisoflavone has molecular formula C17H14O4 and molecular weight 282.29100 g/mol.

What are the upstream and downstream products of 4',7-Dimethoxyisoflavone?

For 4',7-Dimethoxyisoflavone, Upstream Products: Daidzein, iodomethane, Formononetin; Downstream Products: Daidzein, 1-(2-hydroxy-4-methoxyphenyl)-2-(4-methoxyphenyl)ethanone.

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',7-Dimethoxyisoflavone (CAS 1157-39-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5906-3 (accessed 2026-11-09).

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