Cilostazol

Drug ingredient

CAS 73963-72-1

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

US productionNot reported

Import value, 2024$907M

Top sourceIreland 47%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293379 · basket

These shares come from HS customs code 293379, which covers 105 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

IE 47%IrelandBE 19%BelgiumSG 11%SingaporeIT 4%ItalyCH 4%Switzerland

Brazil
Canada
Taiwan
Ukraine
Portugal
Netherlands
South Korea
Israel
Czech Republic
Spain
Finland
Hungary
Malaysia
Australia
Austria
Slovenia

13 FDA-registered drug labelers

Alivus Life Sciences Limited

Aphena Pharma Solutions - Tennessee, LLC

Apotex Corp.

Assia Chemical Industries Ltd - Teva Tech Site

AvKARE

AvPAK

Bryant Ranch Prepack

Chartwell RX, LLC

Dipharma Francis Srl

direct rx

Slate Run Pharmaceuticals, LLC

Teva Pharmaceuticals USA, Inc.

Wavelength Enterprises LTD

Why It Matters

Sectors

Health

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Cilostazol

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Vendor Pricing

$0.77/gAaron Chemicals LLC

CountryHong Kong

Pack$77.00 / 100 g

Purity98%

Vendors22 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

21 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.84	100 g	98%
Combi-Blocks, Inc.	United States	$1.36	500 g	98%
A2B Chem LLC	United States	$1.45	500 g	98%
AA BLOCKS	United States	$1.53	500 g	98%
AK Scientific Specialized	United States	$1.80	100 g	95%
Ambeed, Inc.	United States	$2.40	25 g	98%
AK Scientific, Inc.	United States	$2.41	100 g	98%
Apollo Scientific US	United Kingdom	$2.64	25 g	—
Angene International Limited	United States	$4.05	100 g	98%
AstaTech (2 weeks)	United States	$57.80	5 g	95%
MedKoo Biosciences, Inc	United States	$105.00	10 g	98%
TargetMol Chemicals	China → United States	$179.00	1 g	99.9%
Sigma-Aldrich (Rush Stock)	Germany	$261.69	1 g	—
Sigma-Aldrich	Germany	$261.69	1 g	—
MedChemExpress MCE	Sweden	$274.67	1 g	99.83%
TargetMol Chemicals EU	Austria	$278.00	500 mg	99.9%
Molnova	China	$690.00	100 mg	99%
Apexbio Technology LLC	United States	$990.00	100 mg	99.94%
Cayman Europe	Estonia	$1161.44	250 mg	98%
Angene	China → Hong Kong	$4266.67	30 mg	98%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%

Chemical Identity

CAS73963-72-1

PubChem CID2754

DTXSIDDTXSID9045132

FormulaC20H27N5O2

Mol. Weight369.5 g/mol

SMILESC1CCC(CC1)N2C(=NN=N2)CCCCOC3=CC4=C(C=C3)NC(=O)CC4

Data Sources

PubChem · compound 2754Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Cilostazol (CAS 73963-72-1) https://chemicalindependence.com/chemical/73963-72-1/ PubChem: 2754. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/2754 FDA National Drug Code directory: CAS 73963-72-1. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 293379 for CAS 73963-72-1. Reporting year: 2024. https://usatrade.census.gov/