CAS No. 130018-87-0

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

Chemical Information

CAS Number 130018-87-0
Molecular Formula

C21H25ClN2O3.2HCl
Molecular Weight (MW) 461.81
SMILES C1CN(CCN1CCOCC(=O)O)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl.Cl.Cl

Ordering Information

Biological Activity

Levocetirizine Dihydrochloride is an orally active, potent second-generation histamine H1 receptor antagonist representing the active R-enantiomer of cetirizine. By selectively binding to and inhibiting human histamine H1 receptors, it suppresses downstream histamine-mediated signaling events. Target inhibition effectively reduces vascular endothelial permeability, blocks eosinophil chemotaxis, and attenuates inflammatory responses associated with allergic reactivity. [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 92 mg/mL (199.21 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 92 mg/mL
Ethanol 7 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.