CAS No. 190786-44-8

Batch: Purity:99.86
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Bepotastine Besilate Chemical Structure
Chemical Structure
Check the Bepotastine Besilate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 190786-44-8
Molecular Formula

C21H25ClN2O3.C6H6O3S
Molecular Weight (MW) 547.06
SMILES C1CN(CCC1OC(C2=CC=C(C=C2)Cl)C3=CC=CC=N3)CCCC(=O)O.C1=CC=C(C=C1)S(=O)(=O)O

Biological Activity

Bepotastine Besilate is a selective, non-sedating histamine H1 receptor antagonist with a p. It selectively inhibits histamine-mediated signaling pathways, preventing mast cell activation, inflammatory mediator release, and vascular permeability increases. This target inhibition effectively suppresses allergic responses, airway resistance, and inflammatory phenotypes associated with histamine receptor activation without inducing central nervous system sedation. [1]

How to Prepare Stock Solution?

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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 109 mg/mL (199.24 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
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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Reference

[1] Kato M, et al. Arzneimittelforschung. 1997;47(10):1116-24.

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