CAS No. 80012-43-7

Batch: Purity:99.75
Epinastine Chemical Structure
Chemical Structure
Check the Epinastine product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 80012-43-7
Molecular Formula

C16H15N3

Molecular Weight (MW) 249.31

Ordering Information

Biological Activity

Epinastine is a potent, non-sedating antiallergic agent that acts as a selective antagonist of the histamine H1 receptor. By blocking H1 receptor-mediated signaling, it inhibits the inflammatory actions of leukotrienes, platelet-activating factor, and bradykinin. Additionally, epinastine stabilizes mast cells to prevent mediator release and reduces interleukin-8 release from eosinophils, effectively suppressing downstream allergic inflammation.

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 17 mg/mL (68.18 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 16 mg/mL
Water 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).
Note: Technical data last updated: Sep 1, 2026.