040-000-289 Cilostazol, CAS 73963-72-1

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Synonyms 6-[4-(1-Cyclohexyl-1H-tetrazol-5-yl)butoxy]-3,4-dihydro-2(1H)-quinolinone, OPC 21, OPC 13013, Pletaal, Pletal
Keywords Atherosclerosis, diabetes, obesity
Related products Celastrol, ArtemisininArtemisia Annua Extract


Cilostazol Specifications

Product Name Cilostazol
CAS Registry Number 73963-72-1
Molecular Formula C₂₀H₂₇N₅O₂
Molecular Weight 369.46 g/mol
Purity >98 %
Appearance Off-white powder
Package 1kg-25kg
Shelf life 2 years
Functions Used to treat Atherosclerosis, Takayasu arteritis, Thromboangiitis obliterans, Chronic arterial occlusion due to diabetes, takayasu arteritis,thromboangiitis obliterans, chronic arterial occlusion due to diabetes

Cilostazol Description

Cilostazol is a quinolinone derivative first developed as an anti-thrombotic agent, inhibiting ADP-dependent platelet aggregation. It regulates cell proliferation, stimulates cyclic adenosine monophosphate (cAMP) level, and induces cyclic AMP-dependent protein kinase. This is mediated by selective and specific inhibition of cyclic nucleotide phosphodiesterase  (IC50 = 200 nM). Because of its effects on platelets, cilostazol is useful in various conditions, including peripheral artery disease, stroke, and post-stent stenosis. It is metabolized to products that also affect platelet aggregation by cytochrome P450 (CYP) isoforms CYP3A4, CYP3A5, and CYP1B1.

Cilostazol is an antiplatelet drug and a vasodilator. It works by stopping blood cells called platelets from sticking together.



Cilostazol Applications

  • Used to treat chronic arterial disease and intermittent claudication
  • Used to reduce Madin–Darby cell line (MDCK) proliferation through c-Myc down-regulation
  • Used for secondary stroke prevention


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  2. Koga, Y., Kihara, Y., Okada, M., et al. 2(1H)-Quinolinone derivatives as novel anti-arteriostenotic agents showing anti-thrombotic and anti-hyperplastic activities. Bioorganic & Medicinal Chemistry Letters 8(12), 1471-1476 (1998).
  3. Taniguchi K, Ohtani H, Ikemoto T, Miki A, Hori S, Sawada Y (October 2007). “Possible case of potentiation of the antiplatelet effect of cilostazol by grapefruit juice”. Journal of Clinical Pharmacy and Therapeutics. 32 (5): 457–9. doi:10.1111/j.1365-2710.2007.00844.x. PMID 17875111
  4. Au, T.B., Golledge, J., Walker, P.J., et al. Peripheral arterial disease – diagnosis and management in general practice. Aust.Fam.Physician 42(6), 397-400 (2013).