| 中文名称 | 表没食子儿茶素 |
| 英文名称 | EGC |
| CAS号 | 970-74-1 |
| 分子式 | C15H14O7 |
| 分子量 | 306.27 |
| EINECS号 | 619-254-4 |
| 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) |
| LogP | -0.100 (est) |
| 溶解度 | 可溶于丙酮(少许)、DMSO(少许)、甲醇(少许) |
| 形态 | 固体 |
| 酸度系数(pKa) | 9.02±0.15(Predicted) |
| 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。 |
| 安全说明 | 24/25 |
| WGK Germany | 3 |
| RTECS号 | KB5100000 |
| 海关编码 | 29329990 |
(-)-表没食子儿茶素用于分析含量鉴定/测定,药理活性筛选;
表没食子儿茶素本是一种多酚化合物,天然存在于山茶科植物茶的干叶中,是绿茶提取物中生理活性物质的主体。(-)-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].