CAS No. 77883-43-3

Batch: Purity:99.93
Doxazosin Mesylate Chemical Structure
Chemical Structure
Check the Doxazosin Mesylate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name [4-(4-amino-6,7-dimethoxyquinazolin-2-yl)piperazin-1-yl]-(2,3-dihydro-1,4-benzodioxin-3-yl)methanone;methanesulfonic acid
CAS Number 77883-43-3
Molecular Formula

C23H25N5O5.CH4O3S

Molecular Weight (MW) 547.58
SMILES COC1=C(C=C2C(=C1)C(=NC(=N2)N3CCN(CC3)C(=O)C4COC5=CC=CC=C5O4)N)OC.CS(=O)(=O)O
InChIKey VJECBOKJABCYMF-UHFFFAOYSA-N

Biological Activity

Doxazosin mesylate is a quinazoline derivative that functions as a selective alpha-1 adrenergic receptor antagonist. By blocking norepinephrine binding to postsynaptic alpha-1 adrenergic receptors, it inhibits receptor-mediated signaling pathways and smooth muscle contraction. This targeted action leads to relaxed vascular smooth muscle tone, reduced peripheral vascular resistance, and induction of apoptotic cellular responses. [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 27 mg/mL (49.3 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

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