Procyanidin B2

Also known as: Proanthocyanidin B2, (+)-Procyanidin B2, (-)-Epicatechin-(4β→8)-(-)-epicatechin, Procyanidol B2, 4,8'-Bi-[(+)-epicatechin], Epicatechin(4β→8)epicatechin, CIS,CIS'-4,8'-BI(3,3',4',5,7-PENTAHYDROXYFLAVANE), UNII-L88HKE854X, [4,8'-Bi-2H-1-benzopyran]-3,3',5,5',7,7'-hexol, 2,2'-bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-, (2R,2'R,3R,3'R,4R)-

Procyanidin B2 (CAS 29106-49-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C30H26O12 and a molecular weight of 578.520 g/mol. Key properties include a melting point of 197-198ºC, a boiling point of 955.3±65.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 531.6±34.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 29106-49-8
Jingsj CID: J-1970700-7
Molecular Formula: C₃₀H₂₆O₁₂
Molecular Weight: 578.520 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	197-198ºC
Boiling Point	955.3±65.0 °C at 760 mmHg
Density	1.7±0.1 g/cm3
Flash Point	531.6±34.3 °C
Exact Mass	578.142456
PSA	220.76000
LogP	0.30
Vapor Pressure	0.0±0.3 mmHg at 25°C
Refractive Index	1.803
Storage Conditions	2-8°C

Activity & Biological Data

Additional Information	[1]. Avelar MM, et al. Procyanidin b2 cytotoxicity to mcf-7 human breast adenocarcinoma cells. Indian J Pharm Sci. 2012 Jul;74(4):351-5. [2]. Yang H, et al. Procyanidin B2 inhibits NLRP3 inflammasome activation in human vascular endothelial cells. Biochem Pharmacol. 2014 Dec 15;92(4):599-606. [3]. Wu S, et al. Procyanidin B2 attenuates neurological deficits and blood-brain barrier disruption in a rat model of cerebral ischemia. Mol Nutr Food Res. 2015 Oct;59(10):1930-41.

Additional Information

[1]. Avelar MM, et al. Procyanidin b2 cytotoxicity to mcf-7 human breast adenocarcinoma cells. Indian J Pharm Sci. 2012 Jul;74(4):351-5. [2]. Yang H, et al. Procyanidin B2 inhibits NLRP3 inflammasome activation in human vascular endothelial cells. Biochem Pharmacol. 2014 Dec 15;92(4):599-606. [3]. Wu S, et al. Procyanidin B2 attenuates neurological deficits and blood-brain barrier disruption in a rat model of cerebral ischemia. Mol Nutr Food Res. 2015 Oct;59(10):1930-41.

Frequently Asked Questions

What is the CAS number of Procyanidin B2?

The CAS number of Procyanidin B2 is 29106-49-8.

What are the molecular formula and molecular weight of Procyanidin B2?

Procyanidin B2 has molecular formula C30H26O12 and molecular weight 578.520 g/mol.

What are the upstream and downstream products of Procyanidin B2?

For Procyanidin B2, Upstream Products: (+)-Catechin, (-)-Epicatechin; Downstream Products: (-)-Epicatechin, (+)-Catechin, Procyanidin A2.

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. "Procyanidin B2 (CAS 29106-49-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1970700-7 (accessed 2026-11-09).

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