CAS No. 59721-29-8

Batch: Purity:99.97
Camostat Mesilate Chemical Structure
Chemical Structure
Check the Camostat Mesilate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name [4-[2-[2-(dimethylamino)-2-oxoethoxy]-2-oxoethyl]phenyl] 4-(diaminomethylideneamino)benzoate;methanesulfonic acid
CAS Number 59721-29-8
Molecular Formula

C20H22N4O5.CH4O3S

Molecular Weight (MW) 494.52
SMILES CN(C)C(=O)COC(=O)CC1=CC=C(C=C1)OC(=O)C2=CC=C(C=C2)N=C(N)N.CS(=O)(=O)O
InChIKey FSEKIHNIDBATFG-UHFFFAOYSA-N

Ordering Information

Biological Activity

Camostat Mesilate is a trypsin-like protease inhibitor that targets membrane-anchored serine proteases and inhibits airway epithelial sodium channel (ENaC) function (IC50 = 50 nM). By suppressing proteolytic cleavage and activation of ENaC, it reduces sodium ion transport across the airway epithelium. In addition, it inhibits related serine proteases such as trypsin, prostasin, and matriptase, thereby regulating pericellular proteolysis and mucociliary clearance mechanisms in epithelial tissues.

How to Prepare Stock Solution?

Concentration Volume Mass
1 mg 5 mg 10 mg
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (202.21 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 20 mg/mL
Ethanol Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.