CAS No. 68550-75-4

Batch: Purity:99.63
Cilostamide Chemical Structure
Chemical Structure
Check the Cilostamide product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 68550-75-4
Molecular Formula

C20H26N2O3

Molecular Weight (MW) 342.43
SMILES CN(C1CCCCC1)C(=O)CCCOC2=CC3=C(C=C2)NC(=O)C=C3

Ordering Information

Biological Activity

Cilostamide is a selective type III phosphodiesterase inhibitor targeting PDE3A (IC50 = and PDE3B (IC50 = 50 nM). By inhibiting PDE3 activity, it suppresses the hydrolysis of cyclic adenosine monophosphate (cAMP), leading to elevated intracellular cAMP levels and downstream activation of PKA signaling. This pathway modulation regulates key physiological phenotypes, including the inhibition of platelet aggregation and vascular smooth muscle relaxation. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
1 mg 5 mg 10 mg
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 6 mg/mL (17.52 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 5 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.