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/418/501/product-dating-information-06-25-mk.pdf
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42157
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
Größe auswählen
| Packungsgröße | SKU | Verfügbarkeit | Preis |
|---|---|---|---|
| 1 mg | Warenkorb auf Verfügbarkeit prüfen | € 208,00 |
Über diesen Artikel
grade
analytical standard
Quality Segment
assay
≥90% (HPLC)
technique(s)
HPLC: suitable, gas chromatography (GC): suitable
application(s)
food and beverages
format
neat
storage temp.
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
InChI key
XFZJEEAOWLFHDH-NFJBMHMQSA-N
General description
Application
Packaging
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| technique(s) HPLC: suitable, gas chromatography (GC): suitable | technique(s) - | technique(s) - | technique(s) - |
| format neat | format neat | format neat | format neat |
| Quality Level 100 | Quality Level - | Quality Level - | Quality Level - |
| grade analytical standard | grade primary reference standard | grade primary reference standard | grade pharmaceutical primary standard |
| assay ≥90% (HPLC) | assay ≥90.0% (HPLC) | assay ≥90.0% (HPLC) | assay - |
| storage temp. 2-8°C | storage temp. −20°C | storage temp. −20°C | storage temp. 2-8°C |
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Lagerklasse
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Protokolle
HPLC Analysis of Polyphenols in Nero d'Avola Red Wine on Discovery® HS C18 (UV 280 nm)
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.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 42157-1MG-F | 04061835560530 |
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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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