03910590
(±)-儿茶精 水合物
primary reference standard
别名:
反式-2-(3,4-二羟苯基)-3,4-二氢-1(2H)-苯并吡喃-3,5,7-三醇, 反式-3,3′,4′,5,7-五羟基黄烷
等级
primary reference standard
方案
>90.0%
表单
powder
保质期
limited shelf life, expiry date on the label
制造商/商品名称
HWI
应用
food and beverages
储存温度
−20°C
SMILES字符串
[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
InChI key
OFUMQWOJBVNKLR-NQQJLSKUSA-N
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一般描述
Catechin hydrate, a flavononol, belongs to the class of flavonoids. It is present in abundance in Siberian larch (Larix sibirica) and in silymarin extract of milk thistle seeds. Its potent chemopreventive action by virtue of the regulation of genes through the ARE-dependent pathway has been widely investigated. It also shows potential antioxidant activity against ovarian cancer cell growth, cellular melanogenesis, human breast cancer, etc.
Produced and qualified by HWI pharma services GmbH.
Exact content by quantitative NMR can be found on the certificate.
Exact content by quantitative NMR can be found on the certificate.
应用
Catechin hydrate may be used as a reference standard for the determination of the analyte in walnut leaves by high-performance liquid chromatography (HPLC).
生化/生理作用
多酚抗氧化剂。用于中药。
警示用语：
Warning
危险声明
危险分类
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
靶器官
Respiratory system
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
历史批次信息供参考:
分析证书(COA)
Lot/Batch Number
HPLC determination of phenolic acids, flavonoids and juglone in walnut leaves
Nour V, et al.
Journal of Chromatographic Science, 51(9) (2013)
T Miyazawa
BioFactors (Oxford, England), 13(1-4), 55-59 (2001-03-10)
Green tea is consumed as a popular beverage in Japan and throughout the world. During the past decade, epidemiological studies have shown that tea catechin intake is associated with lower risk of cardiovascular disease. In vitro biochemical studies have reported
R Hursel et al.
Obesity reviews : an official journal of the International Association for the Study of Obesity, 12(7), e573-e581 (2011-03-04)
Different outcomes of the effect of catechin-caffeine mixtures and caffeine-only supplementation on energy expenditure and fat oxidation have been reported in short-term studies. Therefore, a meta-analysis was conducted to elucidate whether catechin-caffeine mixtures and caffeine-only supplementation indeed increase thermogenesis and
Silvia Mandel et al.
Free radical biology & medicine, 37(3), 304-317 (2004-06-30)
Neurodegeneration in Parkinson's, Alzheimer's, and other neurodegenerative diseases seems to be multifactorial, in that a complex set of toxic reactions including inflammation, glutamatergic neurotoxicity, increases in iron and nitric oxide, depletion of endogenous antioxidants, reduced expression of trophic factors, dysfunction
Elena Roura et al.
Clinical chemistry, 52(4), 749-752 (2006-02-14)
Plant polyphenols have been studied largely because of the possibility that they might underlie the protective effects afforded by fruit and vegetable intake against cancer and other chronic diseases. Measurement of polyphenol content excreted in urine as an indicator of
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