(-)-Epicatechin(Synonyms: 表儿茶素; (-)-Epicatechol; Epicatechin; epi-Catechin)

发表于2024年5月22日由Whatman官网

天然产物黄酮类 Flavonoids

(-)-Epicatechin (Synonyms: 表儿茶素; (-)-Epicatechol; Epicatechin; epi-Catechin) 纯度: 99.0%

(-)-Epicatechin 抑制环加氧酶-1 (COX-1) , IC₅₀为 3.2 μM。(-)-Epicatechin 通过阻断 NF-κB 的 p65 亚基的核定位来抑制 IL-1β 诱导的 iNOS 表达。

(-)-Epicatechin Chemical Structure

CAS No. : 490-46-0

规格	价格	是否有货
Free Sample (0.1-0.5 mg)		Apply now
10 mM * 1 mL in DMSO	￥770	In-stock
10 mg	￥700	In-stock
50 mg	￥1100	In-stock
100 mg	￥1600	In-stock
200 mg		询价
500 mg		询价

* Please select Quantity before adding items.

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Food-Sourced Compound Library
Rare Diseases Drug Library

生物活性

(-)-Epicatechin inhibits cyclooxygenase-1 (COX-1) with an IC₅₀ of 3.2 μM. (-)-Epicatechin inhibits the IL-1β-induced expression of iNOS by blocking the nuclear localization of the p65 subunit of NF-κB.

IC₅₀ & Target

COX-1

3.2 μM (IC₅₀)

Human Endogenous Metabolite

体外研究
(In Vitro)

(-)-Epicatechin exhibits >95% inhibitory activity at 70 μg/mL against cyclooxygenase-1 (COX-1) with an IC₅₀ of 3.2 μM^[1]. (-)-Epicatechin inhibits the IL-1β-induced expression of iNOS by blocking the nuclear localization of the p65 subunit of NF-κB. In RINm5F cells, (-)-Epicatechin is shown to block the inhibition of insulin release after addition of IL-1β. Additionally, (-)-Epicatechin is shown to inhibit the proliferation of Hodgkin’s lymphoma cells and Jurkat T cells, which is attributed to the ability of (-)-Epicatechin to inhibit the binding of NF-κB to DNA in these cells. In human colorectal cancer HCT-116 cells, combining 20 μM Panaxadiol with 150, 200, or 250 μM (-)-Epicatechin results in growth inhibition of 51%, 97%, and 95%, respectively. The combination also increases the apoptosis level by 11.9%, 16.6%, and 25.8%, as examined by annexin V/PI staining^[2].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究
(In Vivo)

Animals receive 1 mg/kg of (-)-Epicatechin or water (vehicle) via oral gavage (twice daily). Exercise groups undergo 15 days of treadmill exercise. Significant increases in treadmill performance (~50%) and enhanced in situ muscle fatigue resistance (~30%) are observed with (-)-Epicatechin^[3].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial

分子量

290.27

Formula

C₁₅H₁₄O₆

CAS 号

490-46-0

中文名称

表儿茶素；(-)-表儿茶素；表儿茶精；表兒茶酚

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

溶解性数据

In Vitro:

DMSO : 100 mg/mL (344.51 mM; Need ultrasonic)

配制储备液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	3.4451 mL	17.2253 mL	34.4507 mL
5 mM	0.6890 mL	3.4451 mL	6.8901 mL
10 mM	0.3445 mL	1.7225 mL	3.4451 mL

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。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用；以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

1.

请依序添加每种溶剂： 10% DMSO 40% PEG300 5% Tween-80 45% saline

Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (8.61 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液
2.

请依序添加每种溶剂： 10% DMSO 90% (20% SBE-β-CD in saline)

Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (8.61 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
3.

请依序添加每种溶剂： 10% DMSO 90% corn oil

Solubility: ≥ 2.5 mg/mL (8.61 mM); Clear solution

此方案可获得 ≥ 2.5 mg/mL (8.61 mM，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 1 mL 工作液为例，取 100 μL 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

*以上所有助溶剂都可在 Shanghai Jinpan Biotech Co Ltd 网站选购。

参考文献

[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9.

[2]. Shay J, et al. Molecular Mechanisms and Therapeutic Effects of (-)-Epicatechin and Other Polyphenols in Cancer, Inflammation, Diabetes, and Neurodegeneration. Oxid Med Cell Longev. 2015;2015:181260.

[3]. Nogueira L, et al. (-)-Epicatechin enhances fatigue resistance and oxidative capacity in mouse muscle. J Physiol. 2011 Sep 15;589(Pt 18):4615-31.

Animal Administration ^[3]	Mice^[3] 1-year-old, male C57BL/6N mice (n=25) are randomized into four groups. Mice in the (-)-Epicatechin groups 3 and 4 are given 1.0 mg/kg twice a day (morning and evening) for 15 consecutive days, whereas animals in the control groups 1 and 2 receive the vehicle (water). Both (-)-Epicatechin and vehicle are administered via oral gavage^[3]. Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.
参考文献	[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9. [2]. Shay J, et al. Molecular Mechanisms and Therapeutic Effects of (-)-Epicatechin and Other Polyphenols in Cancer, Inflammation, Diabetes, and Neurodegeneration. Oxid Med Cell Longev. 2015;2015:181260. [3]. Nogueira L, et al. (-)-Epicatechin enhances fatigue resistance and oxidative capacity in mouse muscle. J Physiol. 2011 Sep 15;589(Pt 18):4615-31.

Animal Administration
^[3]

Mice^[3]
1-year-old, male C57BL/6N mice (n=25) are randomized into four groups. Mice in the (-)-Epicatechin groups 3 and 4 are given 1.0 mg/kg twice a day (morning and evening) for 15 consecutive days, whereas animals in the control groups 1 and 2 receive the vehicle (water). Both (-)-Epicatechin and vehicle are administered via oral gavage^[3].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

参考文献

[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9.

[2]. Shay J, et al. Molecular Mechanisms and Therapeutic Effects of (-)-Epicatechin and Other Polyphenols in Cancer, Inflammation, Diabetes, and Neurodegeneration. Oxid Med Cell Longev. 2015;2015:181260.

[3]. Nogueira L, et al. (-)-Epicatechin enhances fatigue resistance and oxidative capacity in mouse muscle. J Physiol. 2011 Sep 15;589(Pt 18):4615-31.

(-)-Epicatechin gallate(Synonyms: 表儿茶素没食子酸酯; Epicatechin gallate; ECG; (-)-Epicatechin 3-O-gallate)

发表于2024年5月16日由Whatman官网

天然产物黄酮类 Flavonoids

(-)-Epicatechin gallate (Synonyms: 表儿茶素没食子酸酯; Epicatechin gallate; ECG; (-)-Epicatechin 3-O-gallate) 纯度: 98.20%

(-)-Epicatechin gallate (Epicatechin gallate) 抑制环加氧酶-1 (COX-1) , IC₅₀ 为 7.5 μM。

(-)-Epicatechin gallate Chemical Structure

CAS No. : 1257-08-5

规格	价格	是否有货
Free Sample (0.1-0.5 mg)		Apply now
10 mM * 1 mL in DMSO	￥550	In-stock
5 mg	￥500	In-stock
10 mg	￥700	In-stock
25 mg	￥1200	In-stock
50 mg	￥2000	In-stock
100 mg	￥3000	In-stock
200 mg		询价
500 mg		询价

* Please select Quantity before adding items.

(-)-Epicatechin gallate 相关产品

•相关化合物库:

Natural Product Library Plus
Drug Repurposing Compound Library Plus
Clinical Compound Library Plus
Bioactive Compound Library Plus
Anti-Infection Compound Library
Immunology/Inflammation Compound Library
Natural Product Library
Anti-Cancer Compound Library
Clinical Compound Library
Antiviral Compound Library
Autophagy Compound Library
Anti-Aging Compound Library
Drug Repurposing Compound Library
Anti-COVID-19 Compound Library
Phenols Library
Traditional Chinese Medicine Monomer Library
FDA Approved & Pharmacopeial Drug Library
Flavonoids Library
Food-Sourced Compound Library
Children’s Drug Library

生物活性

(-)-Epicatechin gallate (Epicatechin gallate) inhibits cyclooxygenase-1 (COX-1) with an IC₅₀ of 7.5 μM.

IC₅₀ & Target

COX-1

7.5 μM (IC₅₀)

体外研究
(In Vitro)

(-)-Epicatechin gallate (Epicatechin gallate) exhibits >95% inhibitory activity at 70 μg/mL against cyclooxygenase-1 (COX-1) with an IC₅₀ of 7.5 μM^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究
(In Vivo)

(-)-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 (1.0 mg/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 t_1/2α of 0.038 h, a t_1/2βof 0.291 h and a t_1/2γ of 4.033 h . The CL_tot of ECG is 4.19 L/h • kg. The Vd_ss is 12.39 L/kg^[2].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial

分子量

442.37

Formula

C₂₂H₁₈O₁₀

CAS 号

1257-08-5

中文名称

表儿茶素没食子酸酯；表儿茶精没食子酸酯

运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

溶解性数据

In Vitro:

DMSO : ≥ 30 mg/mL (67.82 mM)

* “≥” means soluble, but saturation unknown.

配制储备液

浓度溶剂体积质量	1 mg	5 mg	10 mg

1 mM	2.2606 mL	11.3028 mL	22.6055 mL
5 mM	0.4521 mL	2.2606 mL	4.5211 mL
10 mM	0.2261 mL	1.1303 mL	2.2606 mL

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。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (protect from light)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

1.

请依序添加每种溶剂： 10% DMSO 40% PEG300 5% Tween-80 45% saline

Solubility: ≥ 2.17 mg/mL (4.91 mM); Clear solution

此方案可获得 ≥ 2.17 mg/mL (4.91 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 21.7 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液
2.

请依序添加每种溶剂： 10% DMSO 90% (20% SBE-β-CD in saline)

Solubility: ≥ 2.17 mg/mL (4.91 mM); Clear solution

此方案可获得 ≥ 2.17 mg/mL (4.91 mM，饱和度未知) 的澄清溶液。

以 1 mL 工作液为例，取 100 μL 21.7 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
3.

请依序添加每种溶剂： 10% DMSO 90% corn oil

Solubility: ≥ 2.17 mg/mL (4.91 mM); Clear solution

此方案可获得 ≥ 2.17 mg/mL (4.91 mM，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 1 mL 工作液为例，取 100 μL 21.7 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

*以上所有助溶剂都可在 Shanghai Jinpan Biotech Co Ltd 网站选购。

参考文献

[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9.

[2]. Takizawa Y, et al. Pharmacokinetics of (-)-epicatechin-3-O-gallate, an active component of Onpi-to, in rats. Biol Pharm Bull. 2003 May;26(5):608-12.

Animal Administration	Rats^[2] 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 50.0 mg/10 mL for oral administration to rats at 10 mL/kg. For intravenous injection in rats at 1.0 mg/kg, an ethanolic solution of Epicatechin gallate is diluted with 10% w/v sodium citrate solution to 1.0 mg/mL; the final concentration of ethanol is 1% v/v^[2]. Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.
参考文献	[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9. [2]. Takizawa Y, et al. Pharmacokinetics of (-)-epicatechin-3-O-gallate, an active component of Onpi-to, in rats. Biol Pharm Bull. 2003 May;26(5):608-12.

Animal Administration

Rats^[2]
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 50.0 mg/10 mL for oral administration to rats at 10 mL/kg. For intravenous injection in rats at 1.0 mg/kg, an ethanolic solution of Epicatechin gallate is diluted with 10% w/v sodium citrate solution to 1.0 mg/mL; the final concentration of ethanol is 1% v/v^[2].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

参考文献

[1]. Waffo-Téguo P, et al. Potential cancer-chemopreventive activities of wine stilbenoids and flavans extracted from grape (Vitis vinifera) cell cultures. Nutr Cancer. 2001;40(2):173-9.

[2]. Takizawa Y, et al. Pharmacokinetics of (-)-epicatechin-3-O-gallate, an active component of Onpi-to, in rats. Biol Pharm Bull. 2003 May;26(5):608-12.