970-74-1
基本信息
绿茶儿茶酚
表没食子儿茶素
(-)-表没食子酸儿茶素
表没食子儿茶素 (EGC)
(EGC) 表没食子酸儿茶素
L-表没食子儿茶精
(-)-表没食子儿茶素
(2R,3R)-2-(3,4,5-TRIHYDROXYPHENYL)-3,4-DIHYDRO-1(2H)-BENZOPYRAN-3,5,7-TRIOL
3,3',4',5,5',7-HEXAHYDROXYFLAVAN
(-)-3,5,7,3',4',5'-HEXAHYDROXYLFLAVAN
(-)-CIS-2-(3,4,5-TRIHYDROXYPHENYL)-3,4-DIHYDRO-1(2H)-BENZOPYRAN-3,5,7-TRIOL
(-)-CIS-3,3',4',5,5',7-HEXAHYDROXYFLAVANE
(-)-EGC
(-)-EPIGALLOCATECHIN
EPIGALLOCATECHIN
EPIGALLOCATECHIN,(-)-
(-)-epigallocatechol
3,3’,4’,5,5’,7-flavanhexol
5,7-triol,3,4-dihydro-2-(3,4,5-trihydroxyphenyl)-2h-1-benzopyran-(2r-cis
antiscurvyfactorc(sub2)
epigallocatechol
Greenteacatechins
l-epigallocatechin
(−
)-Epigallocatechin
EPIGALLOCATECHIN (EGC) FROM GREEN TEA 70% BY HPLC
EPIGALLOCATECHIN (EGC) FROM GREEN TEA 50% BY HPLC
物理化学性质
外观性状 | 来源于绿茶中提取得到。 |
熔点 | 208-210°C |
比旋光度 | -50 º (c=0.04, EtOH) |
沸点 | 685.6±55.0 °C(Predicted) |
密度 | 1.695±0.06 g/cm3(Predicted) |
储存条件 | 2-8°C |
溶解度 | 可溶于丙酮(少许)、DMSO(少许)、甲醇(少许) |
酸度系数(pKa) | 9.02±0.15(Predicted) |
形态 | 固体 |
颜色 | 白色至浅米色 |
最大波长(λmax) | 278nm(MeOH)(lit.) |
稳定性 | 稳定的。与强氧化剂不相容。 |
InChIKey | XMOCLSLCDHWDHP-IUODEOHRSA-N |
LogP | -0.100 (est) |
CAS 数据库 | 970-74-1(CAS DataBase Reference) |
安全数据
危险性符号(GHS) | GHS07 |
警示词 | 警告 |
危险性描述 | H302-H315-H319-H335 |
防范说明 | P261-P305+P351+P338 |
安全说明 | 24/25 |
WGK Germany | 3 |
RTECS号 | KB5100000 |
F | 3-10 |
海关编码 | 29329990 |
应用领域
常见问题列表
(-)-表没食子儿茶素用于分析含量鉴定/测定,药理活性筛选;
表没食子儿茶素具有如下生理作用:
1,表没食子儿茶素具有抗氧化作用,能够保护生物膜免受自由基诱导的氧化性损伤。
2,表没食子儿茶素具有降血脂作用,能预防动脉粥样硬化和心血管疾病等多种生物学功能,甚至认为比维生素E强。
3,表没食子儿茶素具有抗癌活性,活性比表没食子儿茶素没食子酸酯略低。
(-)-Epigallocatechin (EGC) is a potent inhibitor of amyloidogenic cystatin I66Q amyloid fibril formation in vitro. Computational analysis suggests that (-)-Epigallocatechin prevents amyloidogenic cystatin fibril formation by stabilizing the molecule in its native-like state as opposed to redirecting aggregation to disordered, amorphous aggregates [1]. Combined curcumin and EGCG treatment reduced the cancer stem-like Cluster of differentiation 44 (CD44)-positive cell population. Western blot and immunoprecipitation analyses revealed that curcumin and (-)-Epigallocatechin (EGC) specifically inhibited STAT3 phosphorylation and STAT3-NFkB interaction was retained [2]. (-)-Epigallocatechin (EGC) exhibits a MIC and MBC of 5 μg/mL and 20 μg/mL respectively and effectively eradicated E. faecalis biofilms. (-)-Epigallocatechin induces the formation of hydroxyl radicals in E. faecalis. The addition of DIP protected E. faecalis against EGCG-mediated antibacterial effects. At sub-MIC, (-)-Epigallocatechin induces significant down-regulation of E. faecalis virulence genes [3].