isodiospyrin

Also known as: isodiospyrin, isodiospirin, isoldiospyrin, 1',4-dihydroxy-2,3'-dimethyl-1,2'-binaphthalene-5,5',8,8'-tetrone, (-)-1',4-dihydroxy-2,3'-dimethyl-1,2'-binaphthalene-5,5',8,8'-tetrone, [1,2'-binaphthalene]-5,5',8,8'-tetrone, 1',4-dihydroxy-2,3'-dimethyl-

isodiospyrin (CAS 20175-84-2) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C22H14O6 and a molecular weight of 374.343 g/mol. Key properties include a boiling point of 712.0±60.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 398.3±29.4 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 20175-84-2
Jingsj CID: J-1975095-6
Molecular Formula: C₂₂H₁₄O₆
Molecular Weight: 374.343 g/mol
Category: Ketones
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	712.0±60.0 °C at 760 mmHg
Density	1.5±0.1 g/cm3
Flash Point	398.3±29.4 °C
Exact Mass	374.079041
PSA	108.74000
LogP	3.83
Vapor Pressure	0.0±2.4 mmHg at 25°C
Refractive Index	1.707

Activity & Biological Data

Target	Topoisomerase I
Additional Information	[1]. Chun-Yuan Ting, et al. Isodiospyrin as a novel human DNA topoisomerase I inhibitor. Biochem Pharmacol. 2003 Nov 15;66(10):1981-91. [2]. B A Adeniyi, et al. Antibacterial activity of diospyrin, isodiospyrin and bisisodiospyrin from the root of Diospyros piscatoria (Gurke) (Ebenaceae). Phytother Res. 2000 Mar;14(2):112-7. [3]. Xiaoning Wang, et al. Antifungal metabolites from the roots of Diospyros virginiana by overpressure layer chromatography. Chem Biodivers. 2011 Dec;8(12):2331-40.

Target

Topoisomerase I

Additional Information

[1]. Chun-Yuan Ting, et al. Isodiospyrin as a novel human DNA topoisomerase I inhibitor. Biochem Pharmacol. 2003 Nov 15;66(10):1981-91. [2]. B A Adeniyi, et al. Antibacterial activity of diospyrin, isodiospyrin and bisisodiospyrin from the root of Diospyros piscatoria (Gurke) (Ebenaceae). Phytother Res. 2000 Mar;14(2):112-7. [3]. Xiaoning Wang, et al. Antifungal metabolites from the roots of Diospyros virginiana by overpressure layer chromatography. Chem Biodivers. 2011 Dec;8(12):2331-40.

Frequently Asked Questions

What is the CAS number of isodiospyrin?

The CAS number of isodiospyrin is 20175-84-2.

What are the molecular formula and molecular weight of isodiospyrin?

isodiospyrin has molecular formula C22H14O6 and molecular weight 374.343 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. "isodiospyrin (CAS 20175-84-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1975095-6 (accessed 2026-11-06).

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