1. Immunology/Inflammation
  2. COX

(-)-Epicatechin gallate (Synonyms: ECG; Epicatechin gallate; (-)-Epicatechin 3-O-gallate)

Cat. No.: HY-N0002 Purity: 98.57%
Handling Instructions

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

For research use only. We do not sell to patients.

(-)-Epicatechin gallate Chemical Structure

(-)-Epicatechin gallate Chemical Structure

CAS No. : 1257-08-5

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 55 In-stock
Estimated Time of Arrival: December 31
5 mg USD 50 In-stock
Estimated Time of Arrival: December 31
10 mg USD 70 In-stock
Estimated Time of Arrival: December 31
25 mg USD 150 In-stock
Estimated Time of Arrival: December 31
50 mg USD 250 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Other Forms of (-)-Epicatechin gallate:

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  • Biological Activity

  • Protocol

  • Technical Information

  • Purity & Documentation

  • References


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

IC50 & Target[1]


7.5 μM (IC50)

In Vitro

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

In Vivo

Epicatechin gallate ((-)-Epicatechin-3-O-gallate, ECG), 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 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[2].

Clinical Trial
Solvent & Solubility
In Vitro: 

DMSO : ≥ 30 mg/mL (67.82 mM)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 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
*Please refer to the solubility information to select the appropriate solvent.
Animal Administration

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].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight







O=C(O[[email protected]]1[[email protected]@H](C2=CC=C(O)C(O)=C2)OC3=CC(O)=CC(O)=C3C1)C4=CC(O)=C(O)C(O)=C4

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

Room temperature in continental US; may vary elsewhere

Purity: 98.57%

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This equation is commonly abbreviated as: C1V1 = C2V2

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× = ×
C1   V1   C2   V2

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Product Name:
(-)-Epicatechin gallate
Cat. No.:

(-)-Epicatechin gallate

Cat. No.: HY-N0002