Mefenamic Acid

Catalog No.S4078 Synonyms: CI 473,CN-35355

Mefenamic Acid Chemical Structure

Molecular Weight(MW): 241.29

Mefenamic Acid is a competitive inhibitor of COX-1 and COX-2.

Size Price Stock Quantity  
In DMSO USD 130 In stock
USD 97 In stock
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Purity & Quality Control

Choose Selective COX Inhibitors

Biological Activity

Description Mefenamic Acid is a competitive inhibitor of COX-1 and COX-2.
COX-1 [1] COX-2 [1]



Solubility (25°C)

In vitro DMSO 48 mg/mL (198.93 mM)
Water Insoluble
Ethanol Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 241.29


CAS No. 61-68-7
Storage powder
in solvent
Synonyms CI 473,CN-35355

Bio Calculators

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Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).

Dilution Calculator

Dilution Calculator

Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:

Concentration (start) x Volume (start) = Concentration (final) x Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )

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* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).

The Serial Dilution Calculator Equation

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Definitions of molecular mass, molecular weight, molar mass and molar weight:

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Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

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Mass Concentration Volume Molecular Weight

Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02943655 Not yet recruiting Improve Quality of Life|Heavy Menstrual Bleeding Assiut University November 2016 Phase 3
NCT01942122 Recruiting Endometrioma|Visual Analogue Pain Scale: Moderate or Severe Pain Dexa Medica Group October 2015 Phase 2|Phase 3
NCT02417337 Completed Pain|Postoperative Pain|Irreversible Pulpitis University of Khartoum August 2012 Phase 2
NCT01598012 Completed Primary Dysmenorrhea Mahidol University December 2011 Phase 4
NCT01295294 Completed Uterine Hemorrhage Bayer March 2011 Phase 4
NCT01060696 Unknown status Infertility Mahidol University|Siriraj Hospital January 2009 --

Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

Tel: +1-832-582-8158 Ext:3

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COX Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID