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Procyanidin B2

analytical standard

Synonym(e):

(−)-Epicatechin (4β-8)-(−)-epicatechin, 4,8″-Bi-[(+)-epicatechin], cis,cis″-4,8″-Bi-(3,3′,4′,5,7-pentahydroxy-flavan), Proanthocyanidin B2

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About This Item

Empirische Formel (Hill-System):
C30H26O12
CAS-Nummer:
Molekulargewicht:
578.52
MDL-Nummer:
UNSPSC-Code:
85151701
PubChem Substanz-ID:
NACRES:
NA.24

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Qualität

analytical standard

Qualitätsniveau

Assay

≥90% (HPLC)

Methode(n)

HPLC: suitable
gas chromatography (GC): suitable

Anwendung(en)

food and beverages

Format

neat

Lagertemp.

2-8°C

SMILES String

O[C@@H]1Cc2c(O)cc(O)c([C@@H]3[C@@H](O)[C@H](Oc4cc(O)cc(O)c34)c5ccc(O)c(O)c5)c2O[C@@H]1c6ccc(O)c(O)c6

InChI

1S/C30H26O12/c31-13-7-20(37)24-23(8-13)41-29(12-2-4-16(33)19(36)6-12)27(40)26(24)25-21(38)10-17(34)14-9-22(39)28(42-30(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,22,26-29,31-40H,9H2/t22-,26-,27-,28-,29-/m1/s1

InChIKey

XFZJEEAOWLFHDH-NFJBMHMQSA-N

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Allgemeine Beschreibung

Procyanidin B2 is a B type of proanthocyanidin, that is present in plants, especially in grape seeds, apples and cacao seeds[1], which is known to possess anti-inflammatory properties and antioxidant properties.[2]

Anwendung

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Verpackung

Bottomless glass bottle. Contents are inside inserted fused cone.

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)


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Analysenzertifikate (COA)

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Kunden haben sich ebenfalls angesehen

Stavroula Stoupi et al.
Molecular nutrition & food research, 54(6), 747-759 (2009-11-28)
The catabolism by human faecal microbiota of (-)-epicatechin (1) (2, 3-cis stereochemistry) and its dimer pure procyanidin B2 (2), has been compared using a static in vitro culture model. The catabolites were characterised by LC-MS(n), UV absorption and relative retention
Nabeelah Bibi Sadeer et al.
Journal of pharmaceutical and biomedical analysis, 174, 19-33 (2019-06-04)
Africa is famous for its floral biodiversity, exploited by local people for therapeutic purposes. However, such plants need to be scrutinised scientifically for the presence of bioactive compounds and possible biological properties. This study attempts for the first time to
Mathias Jung et al.
Molecular nutrition & food research, 53(10), 1263-1280 (2009-09-19)
Apples (Malus spp., Rosaceae) and products thereof contain high amounts of polyphenols which show diverse biological activities and may contribute to beneficial health effects, like protecting the intestine against inflammation initiated by chronic inflammatory bowel diseases (IBD). IBD are characterized
Procyanidin B2 gallates inhibit IFN-? and IL-17 production in T cells by suppressing T-bet and ROR?t expression
Tanaka S, et al.
International Immunopharmacology, 44, 87-96 (2017)
Daniela Rossin et al.
Antioxidants (Basel, Switzerland), 8(6) (2019-06-04)
Exaggerated Toll-like receptor (TLR)-mediated immune and inflammatory responses play a role in inflammatory bowel diseases. This report deals with the ability of a mixture of oxysterols widely present in cholesterol-rich foods to induce in vitro intestinal inflammation through TLR up-regulation.

Artikel

Antioxidants protect biological systems from oxidative damage produced by oxygen-containing free radicals and from redoxactive transition metal ions such as iron, copper, and cadmium.

Protokolle

HPLC Analysis of Polyphenols in Nero d'Avola Red Wine on Discovery® HS C18 (UV 280 nm)

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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