Quassin

Also known as: Nigakilactone D, Picrasa-2,12-diene-1,11,16-trione, 2,12-dimethoxy-, 2,12-Dimethoxypicrasa-2,12-diene-1,11,16-trione, (3aS,6aR,7aS,8S,11aS,11bS,11cS)-2,10-dimethoxy-3,8,11a,11c-tetramethyl-3a,4,5,6a,7,7a,8,11,11a,11b,11c-dodecahydrodibenzo[de,g]chromene-1,5,11-trione

Quassin (CAS 76-78-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C22H28O6 and a molecular weight of 388.454 g/mol. Key properties include a melting point of 200 - 222ºC, a boiling point of 586.3±50.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 255.4±30.2 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 76-78-8
Jingsj CID: J-1975585-2
Molecular Formula: C₂₂H₂₈O₆
Molecular Weight: 388.454 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	200 - 222ºC
Boiling Point	586.3±50.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	255.4±30.2 °C
Exact Mass	388.188599
PSA	78.90000
LogP	2.22
Vapor Pressure	0.0±1.6 mmHg at 25°C
Refractive Index	1.553
Storage Conditions	2-8℃

Activity & Biological Data

Target	IC50: 0.15 μM (P. falciparum)[2]
Additional Information	[1]. Raji Y, et al. Reproductive activities of female albino rats treated with quassin, a bioactive triterpenoid from stem bark extract of Quassia amara. Niger J Physiol Sci. 2010 Nov 24;25(2):95-102. [2]. Mishra K, et al. Plasmodium falciparum: in vitro interaction of quassin and neo-quassin with artesunate, a hemisuccinate derivative of artemisinin. Exp Parasitol. 2010 Apr;124(4):421-7. [3]. Njar VC, et al. Antifertility activity of Quassia amara: quassin inhibits the steroidogenesis in rat Leydig cells in vitro. Planta Med. 1995 Apr;61(2):180-2.

Target

IC50: 0.15 μM (P. falciparum)[2]

Additional Information

[1]. Raji Y, et al. Reproductive activities of female albino rats treated with quassin, a bioactive triterpenoid from stem bark extract of Quassia amara. Niger J Physiol Sci. 2010 Nov 24;25(2):95-102. [2]. Mishra K, et al. Plasmodium falciparum: in vitro interaction of quassin and neo-quassin with artesunate, a hemisuccinate derivative of artemisinin. Exp Parasitol. 2010 Apr;124(4):421-7. [3]. Njar VC, et al. Antifertility activity of Quassia amara: quassin inhibits the steroidogenesis in rat Leydig cells in vitro. Planta Med. 1995 Apr;61(2):180-2.

Frequently Asked Questions

What is the CAS number of Quassin?

The CAS number of Quassin is 76-78-8.

What are the molecular formula and molecular weight of Quassin?

Quassin has molecular formula C22H28O6 and molecular weight 388.454 g/mol.

What are the upstream and downstream products of Quassin?

For Quassin, Downstream Products: Picrasin B acetate.

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. "Quassin (CAS 76-78-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1975585-2 (accessed 2026-11-09).

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