3',4'-Dihydroxyflavone

Also known as: 2-(3,4-Dihydroxyphenyl)-4H-chromen-4-one, 2-(3,4-Dihydroxyphenyl)-4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)chromone, 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-, Flavone, 3',4'-dihydroxy-, NSC 126566

3',4'-Dihydroxyflavone (CAS 4143-64-0) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C15H10O4 and a molecular weight of 254.24 g/mol. Key properties include a melting point of 251-253°C, a boiling point of 482.3ºC at 760 mmHg, a density of 1.443 g/cm3 and a flash point of 188.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4143-64-0
Jingsj CID: J-40353-2
Molecular Formula: C₁₅H₁₀O₄
Molecular Weight: 254.24 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	251-253°C
Boiling Point	482.3ºC at 760 mmHg
Density	1.443 g/cm3
Flash Point	188.4ºC
Exact Mass	254.05800
PSA	70.67000
LogP	2.87120
Refractive Index	1.698

Activity & Biological Data

Target	IC50: 30 μM (antiallergic activity)[1]
Additional Information	[1]. Sato A, et al. High antiallergic activity of 5,6,4'-trihydroxy-7,8,3'-trimethoxyflavone and 5,6-dihydroxy-7,8,3',4'-tetramethoxyflavone from eau de cologne mint (Mentha×piperita citrata). Fitoterapia. 2015 Apr;102:74-83.

Customs & Trade Information

HS Code	2914501900
Summary	2914501900 other ketone-phenols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 3',4'-Dihydroxyflavone?

The CAS number of 3',4'-Dihydroxyflavone is 4143-64-0.

What are the molecular formula and molecular weight of 3',4'-Dihydroxyflavone?

3',4'-Dihydroxyflavone has molecular formula C15H10O4 and molecular weight 254.24 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'-Dihydroxyflavone (CAS 4143-64-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-40353-2 (accessed 2026-11-09).

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