CAS No. 82586-55-8

Batch: Purity:99.36
Quinapril HCl  Chemical Structure
Chemical Structure
Check the Quinapril HCl product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (3S)-2-[(2S)-2-[[(2S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl]amino]propanoyl]-3,4-dihydro-1H-isoquinoline-3-carboxylic acid;hydrochloride
CAS Number 82586-55-8
Molecular Formula

C25H30N2O5.HCl

Molecular Weight (MW) 474.98
SMILES CCOC(=O)C(CCC1=CC=CC=C1)NC(C)C(=O)N2CC3=CC=CC=C3CC2C(=O)O.Cl
InChIKey IBBLRJGOOANPTQ-JKVLGAQCSA-N

Biological Activity

Quinapril HCl is a potent angiotensin-converting enzyme (ACE) inhibitor that functions as a prodrug converted in vivo to its active diacid metabolite, quinaprilat. Inhibition of ACE disrupts the renin-angiotensin-aldosterone system by preventing the enzymatic cleavage of angiotensin I into angiotensin II, which subsequently reduces downstream vasoconstriction and attenuates aldosterone secretion to modulate cellular signaling involved in vascular tone and electrolyte homeostasis.

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 94 mg/mL (197.9 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 94 mg/mL
Ethanol 94 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.