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C1251

Sigma-Aldrich

(+)-Catechin hydrate

≥98% (HPLC), powder

Synonim(y):

(+)-Cyanidol-3, (2R,3S)-2-(3,4-Dihydroxyphenyl)-3,4-dihydro-1(2H)-benzopyran-3,5,7-triol

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About This Item

Wzór empiryczny (zapis Hilla):
C15H14O6 · xH2O
Numer CAS:
225937-10-0
Masa cząsteczkowa:
290.27 (anhydrous basis)
Beilstein:
3595244
Numer WE:
205-825-1
Numer MDL:
MFCD00150865
Kod UNSPSC:
12352200
Identyfikator substancji w PubChem:
57653982
NACRES:
NA.77

Poziom jakości

200

Próba

≥98% (HPLC)

Postać

powder

kolor

yellow to yellow with tan cast

mp

175-177 °C (anhydrous) (lit.)

rozpuszczalność

ethanol: 50 mg/mL

temp. przechowywania

2-8°C

ciąg SMILES

[H]O[H].O[C@H]1Cc2c(O)cc(O)cc2O[C@@H]1c3ccc(O)c(O)c3

InChI

1S/C15H14O6.H2O/c16-8-4-11(18)9-6-13(20)15(21-14(9)5-8)7-1-2-10(17)12(19)3-7;/h1-5,13,15-20H,6H2;1H2/t13-,15+;/m0./s1

Klucz InChI

OFUMQWOJBVNKLR-NQQJLSKUSA-N

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Opis ogólny

Catechins are phytochemicals, richly present in black grapes, peaches, strawberries and broad beans. Catechins occur in various forms such as catechins, epicatechin, epicatechin gallate, epigallocatechin and epigallocatechin gallate.

Zastosowanie

(+)-Catechin hydrate has been used:
  • as a polyphenol standard in the determination of total polyphenols in the by-products of red wine
  • as an additive to study its effects on in vitro methane production and substrate degradation in a triple-fed batch approach
  • as a substrate to determine the activity of pure L. plantarum CECT 748T 14 recombinant tannase on catechin

Działania biochem./fizjol.

An antioxidant flavonoid of plant origin; a free radical scavenger, preventing free radical-mediated damage in a variety of biological systems. For example, at physiological pH catechin suppressed DNA strand breaks by hydroxyl radicals. It has also been shown to prevent human plasma oxidation. It delayed the consumption of endogenous lipid-soluble antioxidants and inhibited lipid oxidation. Catechin may also function as an inhibitor of fatty acid synthase.
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Piktogramy

Exclamation mark
GHS07

Hasło ostrzegawcze

Warning

Zwroty wskazujące rodzaj zagrożenia

H315,H319,H335

Zwroty wskazujące środki ostrożności

P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338

Klasyfikacja zagrożeń

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Organy docelowe

Respiratory system

Kod klasy składowania

11 - Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 3

Temperatura zapłonu (°F)

Not applicable

Temperatura zapłonu (°C)

Not applicable

Środki ochrony indywidualnej

dust mask type N95 (US), Eyeshields, Gloves

Certyfikaty analizy (CoA)

Poszukaj Certyfikaty analizy (CoA), wpisując numer partii/serii produktów. Numery serii i partii można znaleźć na etykiecie produktu po słowach „seria” lub „partia”.

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Sigma-Aldrich

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Sigma-Aldrich

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(−)-Epigallocatechin gallate ≥95%

Sigma-Aldrich

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(−)-Epigallocatechin gallate

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Sigma-Aldrich

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Epicatechin primary reference standard

03940590

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Quercetin ≥95% (HPLC), solid

Sigma-Aldrich

Q4951

Quercetin

Ni Zhang et al.
Food chemistry, 237, 811-817 (2017-08-03)
Phenolics contents in wine grapes are key indicators for assessing ripeness. Near-infrared hyperspectral images during ripening have been explored to achieve an effective method for predicting phenolics contents. Principal component regression (PCR), partial least squares regression (PLSR) and support vector
Dietary fibre content and antioxidant activity of Manto Negro red grape (Vitis vinifera): pomace and stem
Llobera A and Canellas J
Food Chemistry, 101(2), 659-666 (2007)
Nutrition and Health Info Sheet: Catechins (2008)
Christine Ziegler et al.
Molecular microbiology, 78(1), 13-34 (2010-10-07)
Increases in the environmental osmolarity are key determinants for the growth of microorganisms. To ensure a physiologically acceptable level of cellular hydration and turgor at high osmolarity, many bacteria accumulate compatible solutes. Osmotically controlled uptake systems allow the scavenging of
S B Lotito et al.
Free radical biology & medicine, 24(3), 435-441 (1998-01-23)
Based on the recognized capacity of (+)-catechin (CTCH) to prevent free radical-mediated damage in different biological systems, its role in the protection of human plasma from oxidation was investigated. Samples of human blood plasma were incubated with 50 mM AAPH
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Protokoły

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