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C1251

Sigma-Aldrich

(+)-Catechin hydrate

≥98% (HPLC), powder

Sinonimo/i:

(+)-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

Formula empirica (notazione di Hill):
C15H14O6 · xH2O
Numero CAS:
225937-10-0
Peso molecolare:
290.27 (anhydrous basis)
Beilstein:
3595244
Numero CE:
205-825-1
Numero MDL:
MFCD00150865
Codice UNSPSC:
12352200
ID PubChem:
57653982
NACRES:
NA.77

Livello qualitativo

200

Saggio

≥98% (HPLC)

Forma fisica

powder

Colore

yellow to yellow with tan cast

Punto di fusione

175-177 °C (anhydrous) (lit.)

Solubilità

ethanol: 50 mg/mL

Temperatura di conservazione

2-8°C

Stringa SMILE

[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
OFUMQWOJBVNKLR-NQQJLSKUSA-N

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Descrizione generale

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.

Applicazioni

(+)-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

Azioni biochim/fisiol

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.

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H315,H319,H335

Classi di pericolo

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

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

Certificati d'analisi (COA)

Cerca il Certificati d'analisi (COA) digitando il numero di lotto/batch corrispondente. I numeri di lotto o di batch sono stampati sull'etichetta dei prodotti dopo la parola ‘Lotto’ o ‘Batch’.

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(−)-Catechin gallate ≥98% (HPLC), from green tea

Sigma-Aldrich

C0692

(−)-Catechin gallate

(−)-Epicatechin gallate ≥98% (HPLC), from green tea

Sigma-Aldrich

E3893

(−)-Epicatechin gallate

(−)-Epigallocatechin gallate ≥95%

Sigma-Aldrich

E4143

(−)-Epigallocatechin gallate

(−)-Epigallocatechin ≥95% (HPLC), from green tea

Sigma-Aldrich

E3768

(−)-Epigallocatechin

Epicatechin primary reference standard

03940590

Epicatechin

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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