Isosinensetin

Also known as: 5,7,8,3',4'-Pentamethoxyflavone, 3',4',5,7,8-Pentamethoxyflavone, 2-(3,4-Dimethoxyphenyl)-5,7,8-trimethoxy-4H-1-benzopyran-4-one, 6-Demethoxynobiletin, UNII-63Z99S38LE, 2-(3,4-Dimethoxyphenyl)-5,7,8-trimethoxy-4H-chromen-4-one

Isosinensetin (CAS 17290-70-9) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C20H20O7 and a molecular weight of 372.369 g/mol. Key properties include a melting point of 198-199 ºC, a boiling point of 565.3±50.0 °C at 760 mmHg, a density of 1.244±0.06 g/cm3 (20 ºC 760 Torr) and a flash point of 248.4±30.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 17290-70-9
Jingsj CID: J-1977750-5
Molecular Formula: C₂₀H₂₀O₇
Molecular Weight: 372.369 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	198-199 ºC
Boiling Point	565.3±50.0 °C at 760 mmHg
Density	1.244±0.06 g/cm3 (20 ºC 760 Torr)
Flash Point	248.4±30.2 °C
Exact Mass	372.120911
PSA	76.36000
LogP	2.88
Vapor Pressure	0.0±1.5 mmHg at 25°C
Refractive Index	1.566

Activity & Biological Data

Target	P-glycoprotein[2]
Additional Information	[1]. Wang D, et al. Identification of polymethoxylated flavones from green tangerine peel (Pericarpium Citri Reticulatae Viride) by chromatographic and spectroscopic techniques. J Pharm Biomed Anal. 2007 May 9;44(1):63-9. [2]. Bai J, et al. Inhibitory effects of flavonoids on P-glycoprotein in vitro and in vivo: Food/herb-drug interactions and structure-activity relationships. Toxicol Appl Pharmacol. 2019 Apr 15;369:49-59.

Target

P-glycoprotein[2]

Additional Information

[1]. Wang D, et al. Identification of polymethoxylated flavones from green tangerine peel (Pericarpium Citri Reticulatae Viride) by chromatographic and spectroscopic techniques. J Pharm Biomed Anal. 2007 May 9;44(1):63-9. [2]. Bai J, et al. Inhibitory effects of flavonoids on P-glycoprotein in vitro and in vivo: Food/herb-drug interactions and structure-activity relationships. Toxicol Appl Pharmacol. 2019 Apr 15;369:49-59.

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 Isosinensetin?

The CAS number of Isosinensetin is 17290-70-9.

What are the molecular formula and molecular weight of Isosinensetin?

Isosinensetin has molecular formula C20H20O7 and molecular weight 372.369 g/mol.

What are the upstream and downstream products of Isosinensetin?

For Isosinensetin, Upstream Products: Dimethyl sulfate, Veratraldehyde, 2',4',6'-Trimethoxyacetophenone.

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. "Isosinensetin (CAS 17290-70-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1977750-5 (accessed 2026-11-09).

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