2. Immunology/Inflammation
  3. COX
  4. Mefenamic acid

Mefenamic acid is a non-steroidal anti-inflammatory agent, acting as a competitive inhibitor of hCOX-1 and hCOX-2, with IC50s of 40 nM and 3 μM for hCOX-1 and hCOX-2, respectively.

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

Mefenamic acid Chemical Structure

Mefenamic acid Chemical Structure

CAS No. : 61-68-7

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Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 67 In-stock
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10 mM * 1 mL in DMSO USD 67 In-stock
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500 mg USD 61 In-stock
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Customer Review

Based on 2 publication(s) in Google Scholar

Other Forms of Mefenamic acid:

Mefenamic acid Related Antibodies

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  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

Mefenamic acid is a non-steroidal anti-inflammatory agent, acting as a competitive inhibitor of hCOX-1 and hCOX-2, with IC50s of 40 nM and 3 μM for hCOX-1 and hCOX-2, respectively.

IC50 & Target[1]

hCOX-1

40 nM (IC50)

hCOX-2

3 μM (IC50)

Cellular Effect
Cell Line Type Value Description References
HEK293 EC50
16 μM
Compound: MFA
Agonist activity at human TRPA1 expressed in HEK293 cells assessed as increase in calcium influx by Fluo-4-AM dye based fluorescence assay
Agonist activity at human TRPA1 expressed in HEK293 cells assessed as increase in calcium influx by Fluo-4-AM dye based fluorescence assay
[PMID: 30878828]
In Vitro

Mefenamic acid is a non-steroidal anti-inflammatory agent, acting as a competitive inhibitor of hCOX-1, with IC50s of 40 nM and 3 μM for hCOX-1 and hCOX-2, respectively[1]. Mefenamic acid (0-100 μM) has cytotoxic effects on KB, Saos-2, and 1321N cells, however, U-87MG cells are resistant to Mefenamic acid[2].

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

Mefenamic acid Related Antibodies
Clinical Trial
Molecular Weight

241.29

Formula

C15H15NO2
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(O)C1=CC=CC=C1NC2=CC=CC(C)=C2C
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 100 mg/mL (414.44 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : 0.1 mg/mL (0.41 mM; Need ultrasonic)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.1444 mL 20.7220 mL 41.4439 mL
5 mM 0.8289 mL 4.1444 mL 8.2888 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: 2.5 mg/mL (10.36 mM); Suspended solution; Need ultrasonic

    This protocol yields a suspended solution of 2.5 mg/mL. Suspended solution can be used for oral and intraperitoneal injection.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 2.5 mg/mL (10.36 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References
Cell Assay
[2]

Powder forms of Mefenamic acid, indometacin, aspirin, and celecoxib are dissolved in 0.1% dimethyl sulfoxide (DMSO) to achieve a concentration of 100 μM of stock solution, which is sterilized by filtration through a 0.22-µm filter and then stored at 4°C. Different concentrations (100, 50, 25, 10, and 5 μM) of the drugs (Mefenamic acid, etc.) are prepared by serial dilutions with the FCS-free medium or the medium containing 10% FCS in sterile plastic centrifuge tubes[2].

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

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 4.1444 mL 20.7220 mL 41.4439 mL 103.6098 mL
5 mM 0.8289 mL 4.1444 mL 8.2888 mL 20.7220 mL
10 mM 0.4144 mL 2.0722 mL 4.1444 mL 10.3610 mL
15 mM 0.2763 mL 1.3815 mL 2.7629 mL 6.9073 mL
20 mM 0.2072 mL 1.0361 mL 2.0722 mL 5.1805 mL
25 mM 0.1658 mL 0.8289 mL 1.6578 mL 4.1444 mL
30 mM 0.1381 mL 0.6907 mL 1.3815 mL 3.4537 mL
40 mM 0.1036 mL 0.5180 mL 1.0361 mL 2.5902 mL
50 mM 0.0829 mL 0.4144 mL 0.8289 mL 2.0722 mL
60 mM 0.0691 mL 0.3454 mL 0.6907 mL 1.7268 mL
80 mM 0.0518 mL 0.2590 mL 0.5180 mL 1.2951 mL
100 mM 0.0414 mL 0.2072 mL 0.4144 mL 1.0361 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Mefenamic acid Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

Mefenamic acid61-68-7COXCyclooxygenaseInhibitorinhibitorinhibit

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