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Procyanidin B3

Also known as: Procyanidin B3, Procyanidol B3, Proanthocyanidin B3, Catechin-(4α→8)-catechin, (+)-Catechin-(4α-8)-(+)-catechin, (-)-Procyanidin B3, (2R,2'R,3S,3'S,4S)-2,2'-Bis(3,4-dihydroxyphenyl)-4,8'-bichroman-3,3',5,5',7,7'-hexol, (2R,2'R,3S,3'S,4S)-2,2'-Bis(3,4-dihydroxyphenyl)-[4,8'-bichroman]-3,3',5,5',7,7'-hexaol, (2R,2'R,3S,3'S,4α)-3,3',4,4'-Tetrahydro-2α,2'α-bis(3,4-dihydroxyphenyl)-4,8'-bi[2H-1-benzopyran]-3,3',5,5',7,7'-hexol, [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,3S,3'S,4S)-, UNII-L88HKE854X, Procyanidin B-3, Procyanidin B3 from barley

Procyanidin B3 (CAS 23567-23-9) 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 218-219℃, 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.
23567-23-9
Jingsj CID
J-1957147-2
Molecular Formula
C30H26O12
Molecular Weight
578.520 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point218-219℃
Boiling Point955.3±65.0 °C at 760 mmHg
Density1.7±0.1 g/cm3
Flash Point531.6±34.3 °C
Exact Mass578.142456
PSA220.76000
LogP0.30
Vapor Pressure0.0±0.3 mmHg at 25°C
Refractive Index1.803
Storage Conditions?20°C

Activity & Biological Data

Targetp300[1]
Additional Information[1]. Choi KC, et al. Procyanidin B3, an inhibitor of histone acetyltransferase, enhances the action of antagonist for prostate cancer cells via inhibition of p300-dependent acetylation of androgen receptor. Biochem J. 2011 Jan 1;433(1):235-44.

Frequently Asked Questions

What is the CAS number of Procyanidin B3?

The CAS number of Procyanidin B3 is 23567-23-9.

What are the molecular formula and molecular weight of Procyanidin B3?

Procyanidin B3 has molecular formula C30H26O12 and molecular weight 578.520 g/mol.

What are the upstream and downstream products of Procyanidin B3?

For Procyanidin B3, Upstream Products: (+)-Catechin; Downstream Products: (-)-Epicatechin, (+)-Catechin, Cyanidin.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Procyanidin B3 (CAS 23567-23-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1957147-2 (accessed 2026-11-09).

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