CAS No. 79307-93-0

Batch: Purity:100
Azelastine HCl Chemical Structure
Chemical Structure
Check the Azelastine HCl product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 79307-93-0
Molecular Formula

C22H24ClN3O.HCl

Molecular Weight (MW) 418.36
SMILES CN1CCCC(CC1)N2C(=O)C3=CC=CC=C3C(=N2)CC4=CC=C(C=C4)Cl.Cl

Ordering Information

Biological Activity

Azelastine HCl is a potent, selective, second-generation histamine H1 receptor antagonist. It exerts its biological activity by blocking histamine H1 receptors and suppressing mediator release from inflammatory cells. Downstream of receptor inhibition, Azelastine HCl stabilizes mast cells and inhibits the production and activation of inflammatory cytokines and leukotrienes, thereby attenuating allergic inflammatory responses and vascular hyperpermeability. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 83 mg/mL (198.39 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 83 mg/mL
Ethanol 83 mg/mL
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.