基本信息
产品编号: |
E10001 |
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产品名称: |
(-)-Epicatechin gallate |
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CAS: |
1257-08-5 |
储存条件 |
粉末 |
2-8℃ |
四年 |
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分子式: |
溶于液体 |
-80℃ |
两年 |
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分子量 |
442.37 |
-20℃ |
一个月 |
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化学名: |
[(2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3,4-dihydro-2H-chromen-3-yl] 3,4,5-trihydroxybenzoate |
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Solubility (25°C): |
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体外:
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DMSO |
88mg/mL (198.92mM) |
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Ethanol |
88mg/mL (198.92mM) |
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Water |
Insoluble |
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体内(现配现用): |
1.请依序添加每种溶剂:10% DMSO→40% PEG300→5% Tween-80→45% saline Solubility: ≥ 2.17mg/mL (4.91mM); Clear solution |
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此⽅案可获得 ≥ 2.17mg/mL (4.91mM,饱和度未知) 的澄清溶液。 以 1mL ⼯作液为例,取 100μL 21.7mg/mL 的澄清 DMSO 储备液加到 400μL PEG300 中,混合均匀;向上述体系中加⼊ 50μL Tween-80,混合均匀;然后继续加⼊ 450μL ⽣理盐⽔定容⾄ 1mL。 |
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2.请依序添加每种溶剂:10% DMSO→90% (20% SBE-β-CD in saline) Solubility: ≥ 2.17mg/mL (4.91mM); Clear solution |
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此⽅案可获得 ≥ 2.17mg/mL (4.91mM,饱和度未知) 的澄清溶液。以 1mL ⼯作液为例,取 100μL 21.7mg/mL 的澄清 DMSO 储备液加到 900μL 20% 的 SBE-β-CD ⽣理盐⽔⽔溶液中,混合均匀。 |
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3.请依序添加每种溶剂:10% DMSO→90% corn oil Solubility: ≥ 2.17mg/mL (4.91mM); Clear solution |
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此⽅案可获得 ≥ 2.17mg/mL (4.91mM,饱和度未知) 的澄清溶液,此⽅案不适⽤于实验周期在半个⽉以上的实验。 以 1mL ⼯作液为例,取 100μL 21.7mg/mL 的澄清 DMSO 储备液加到 900μL ⽟⽶油中,混合均匀。 |
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<1mg/ml表示微溶或不溶。 |
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普西唐提供的所有化合物浓度为内部测试所得,实际溶液度可能与公布值有所偏差,属于正常的批间细微差异现象。 |
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请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;⼀旦配成溶液,请分装保存,避免反复冻融造成的产品失效。 |
制备储备液
浓度
溶液体积 质量 |
1mg |
5mg |
10mg |
1mM |
2.2606mL |
11.3028mL |
22.6055mL |
5mM |
0.4521mL |
2.2606mL |
4.5211mL |
10mM |
0.2261mL |
1.1303mL |
2.2606mL |
50mM |
0.0452mL |
0.2261mL |
0.4521mL |
生物活性
产品描述 |
作为一些耐甲氧西林细菌的辅助治疗的一种抗氧化剂。 |
靶点 |
COX-1 7.5μM (IC50) |
体外研究 |
(-)-Epicatechin gallate (Epicatechin gallate) exhibits >95% inhibitory activity at 70 μg/mL against cyclooxygenase-1 (COX-1) with an IC50 of 7.5μM |
体内研究 |
(-)-Epicatechin gallate (Epicatechin gallate), a component of Rhei Rhizoma, is one of the active components of Onpi-to, a herbal medicine composed of five crude drugs (Rhei Rhizome, Glycyrrhizae Radix, Ginseng Radix, Zingiberis Rhizoma and Aconiti Tuber). Following intravenous injection of (-)-Epicatechin gallate (1.0mg/kg) in rats, the plasma concentration vs. time curve is fitted in a three compartment model. Pharmacokinetic parameters for plasma Epicatechin gallate (ECG) are measured. ECG has a t1/2α of 0.038 h, a t1/2βof 0.291 h and a t1/2γ of 4.033 h . The CLtot of ECG is 4.19 L/h • kg. The Vdss is 12.39 L/kg |
推荐实验方法(仅供参考)
Animal Administration |
Rats Male Sprague-Dawley rats, obtained at 7 weeks of age (210-245 g) are used. Epicatechin gallate (ECG) is suspended in 0.5% w/v sodium carboxymethylcellulose at 12.5, 25.0 and 50.0mg/10mL for oral administration to rats at 10mL/kg. For intravenous injection in rats at 1.0mg/kg, an ethanolic solution of Epicatechin gallate is diluted with 10% w/v sodium citrate solution to 1.0mg/mL; the final concentration of ethanol is 1% v/v |
本计算器可帮助您计算出特定溶液中溶质的质量、溶液浓度和体积之间的关系,公式为:
质量 (g) = 浓度 (mol/L) x 体积 (L) x 分子量 (g/mol)
摩尔浓度计算公式
用本工具协助配置特定浓度的溶液,使用的计算公式为:
开始浓度 x 开始体积 = 最终浓度 x 最终体积
稀释公式
稀释公式一般简略地表示为:C1V1 = C2V2 ( 输入 输出 )