Probucol

Drug ingredient

CAS 23288-49-5

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

US productionNot reported

Import value, 2024$760M

Top sourceChina 33%

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 293090 · basket

These shares come from HS customs code 293090, which covers 418 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).

CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Israel
Croatia
Ukraine
Slovakia
United Arab Emirates
Ireland
Poland
Lithuania
Brazil
Singapore
Australia
Armenia
Hong Kong
Vietnam
Czech Republic
Hungary
Greece
Russia

1 FDA-registered drug labeler

SCI PHARMTECH, INC.

Why It Matters

Sectors

Health

Downstream UsesNot recorded

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

$0.85/gCombi-Blocks, Inc.

CountryUnited States

Pack$425.00 / 500 g

Purity98%

Vendors30 available

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

29 more vendors

Vendor	Country	$/g	Pack	Purity
BLD Pharmatech Ltd.	China	$0.88	500 g	98%
A2B Chem LLC	United States	$0.93	500 g	98%
Ambeed, Inc.	United States	$0.96	500 g	98%
AA BLOCKS	United States	$0.98	500 g	98%
Aaron Chemicals LLC	Hong Kong	$1.05	500 g	97%
AK Scientific, Inc.	United States	$1.11	500 g	98%
Angene Chemical	China → Hong Kong	$1.20	500 g	97%
AK Scientific Specialized	United States	$1.63	100 g	95%
BLD Pharmatech GmbH	Germany	$1.65	100 g	98%
Angene International Limited	United States	$1.78	500 g	98%
BLD Pharmatech Co., Limited	United States	$1.82	100 g	98%
AstaTech (2 weeks)	United States	$2.20	100 g	95%
Fulfilled by Molport	Latvia	$12.00	500 mg	—
Cayman Europe	Estonia	$12.26	50 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$15.91	50 g	—
Sigma-Aldrich	Germany	$15.91	50 g	—
MedKoo Biosciences, Inc	United States	$33.00	50 g	98%
TargetMol Chemicals	China → United States	$118.00	1 g	99.99%
Molnova	China	$158.00	500 mg	99%
MedChemExpress MCE	Sweden	$249.26	500 mg	99.92%
Labotest KG	Germany	$453.00	1000 mg	90%
Apexbio Technology LLC	United States	$1000.00	50 mg	99.96%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	97%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%
ChemDiv, Inc.	United States	$7666.67	15 mg	90%
TimTec, LLC	United States	$9333.33	30 mg	90%
ChemBridge Corporation (rush stock)	United States	$13600.00	5 mg	90%

Chemical Identity

CAS23288-49-5

PubChem CID4912

DTXSIDDTXSID2045440

FormulaC31H48O2S2

Mol. Weight516.8 g/mol

SMILESCC(C)(C)C1=CC(=CC(=C1O)C(C)(C)C)SC(C)(C)SC2=CC(=C(C(=C2)C(C)(C)C)O)C(C)(C)C

Data Sources

PubChem · compound 4912Retrieved 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

Probucol (CAS 23288-49-5) https://chemicalindependence.com/chemical/23288-49-5/ PubChem: 4912. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4912 FDA National Drug Code directory: CAS 23288-49-5. 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 293090 for CAS 23288-49-5. Reporting year: 2024. https://usatrade.census.gov/