Robinetin

Also known as: 3,3',4',5',7-Pentahydroxyflavone, 5-Hydroxyfisetin, 3,7,3',4',5'-Pentahydroxyflavone, Norkanugin, 3,7-Dihydroxy-2-(3,4,5-trihydroxyphenyl)-4H-chromen-4-one

Robinetin (CAS 490-31-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H10O7 and a molecular weight of 302.236 g/mol. Key properties include a melting point of 326-328ºC, a boiling point of 669.9±55.0 °C at 760 mmHg, a density of 1.8±0.1 g/cm3 and a flash point of 258.6±25.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 490-31-3
Jingsj CID: J-1981573-7
Molecular Formula: C₁₅H₁₀O₇
Molecular Weight: 302.236 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	326-328ºC
Boiling Point	669.9±55.0 °C at 760 mmHg
Density	1.8±0.1 g/cm3
Flash Point	258.6±25.0 °C
Exact Mass	302.042664
PSA	131.36000
LogP	2.55
Vapor Pressure	0.0±2.2 mmHg at 25°C
Refractive Index	1.823

Activity & Biological Data

Additional Information	[1]. Fesen MR, et, al. Inhibition of HIV-1 integrase by flavones, caffeic acid phenethyl ester (CAPE) and related compounds. Biochem Pharmacol. 1994 Aug 3;48(3):595-608. [2]. Cushnie TPT, et, al. Antimicrobial activity of flavonoids. Int J Antimicrob Agents. 2005 Nov;26(5):343-56. [3]. Chaudhuri S, et, al. Binding of the bioflavonoid robinetin with model membranes and hemoglobin: Inhibition of lipid peroxidation and protein glycosylation. J Photochem Photobiol B. 2010 Jan 21;98(1):12-9. [4]. Birt DF, et, al. Anti-mutagenesis and anti-promotion by apigenin, robinetin and indole-3-carbinol. Carcinogenesis. 1986 Jun;7(6):959-63. [5]. Manrique-de-la-Cuba MF, et, al. Theoretical study of the antioxidant capacity of the flavonoids present in the Annona muricata (Soursop) leaves. J Mol Model. 2019 Jun 25;25(7):200.

Additional Information

[1]. Fesen MR, et, al. Inhibition of HIV-1 integrase by flavones, caffeic acid phenethyl ester (CAPE) and related compounds. Biochem Pharmacol. 1994 Aug 3;48(3):595-608. [2]. Cushnie TPT, et, al. Antimicrobial activity of flavonoids. Int J Antimicrob Agents. 2005 Nov;26(5):343-56. [3]. Chaudhuri S, et, al. Binding of the bioflavonoid robinetin with model membranes and hemoglobin: Inhibition of lipid peroxidation and protein glycosylation. J Photochem Photobiol B. 2010 Jan 21;98(1):12-9. [4]. Birt DF, et, al. Anti-mutagenesis and anti-promotion by apigenin, robinetin and indole-3-carbinol. Carcinogenesis. 1986 Jun;7(6):959-63. [5]. Manrique-de-la-Cuba MF, et, al. Theoretical study of the antioxidant capacity of the flavonoids present in the Annona muricata (Soursop) leaves. J Mol Model. 2019 Jun 25;25(7):200.

Customs & Trade Information

HS Code	2932999099
Summary	2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. 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 Robinetin?

The CAS number of Robinetin is 490-31-3.

What are the molecular formula and molecular weight of Robinetin?

Robinetin has molecular formula C15H10O7 and molecular weight 302.236 g/mol.

What are the upstream and downstream products of Robinetin?

For Robinetin, Upstream Products: 1-(4-(Benzyloxy)-2-hydroxyphenyl)ethanone, 2,4-Dihydroxyacetophenone, 1-(2,4-Dihydroxyphenyl)-2-methoxyethanone.

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. "Robinetin (CAS 490-31-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1981573-7 (accessed 2026-11-09).

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