Clopidol

Drug ingredient

CAS 2971-90-6

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

US productionNot reported

Import value, 2024$1.3B

Top sourceChina 32%

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 293339 · basket

These shares come from HS customs code 293339, which covers 397 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 32%ChinaIN 15%IndiaDE 10%GermanyBE 9%BelgiumCH 8%Switzerland

Taiwan
Ukraine
Sweden
Argentina
Canada
Finland
Malta
Israel
Netherlands
Denmark
United Arab Emirates
Mexico
Brunei
Slovakia
Australia
South Africa
Poland
Latvia
Lithuania
Estonia
Slovenia
Czech Republic
Croatia
Hong Kong

1 FDA-registered drug labeler

JIANGSU TIANHE PHARMACEUTICAL CO., LTD.

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

$0.81/gCombi-Blocks, Inc.

CountryUnited States

Pack$405.00 / 500 g

Purity95%

Vendors26 available

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

25 more vendors

Vendor	Country	$/g	Pack	Purity
BLD Pharmatech Ltd.	China	$0.94	500 g	95%
Aaron Chemicals LLC	Hong Kong	$0.94	500 g	95%
Angene Chemical	China → Hong Kong	$1.07	500 g	95%
A2B Chem LLC	United States	$1.08	25 g	95%
BLD Pharmatech Co., Limited	United States	$1.17	100 g	95%
BLD Pharmatech GmbH	Germany	$1.17	100 g	95%
Ambeed, Inc.	United States	$1.17	100 g	95%
AA BLOCKS	United States	$1.20	25 g	95%
Fluorochem UK	United Kingdom	$7.15	1 g	95%
AK Scientific Specialized	United States	$11.20	25 g	95%
AK Scientific, Inc.	United States	$15.68	25 g	98%
Angene International Limited	United States	$25.48	25 g	98%
MedChemExpress MCE	Sweden	$31.22	5 g	99.77%
Interbioscreen	Hong Kong	$34.00	10 g	95%
TargetMol Chemicals	China → United States	$40.00	1 g	99.84%
Cayman Europe	Estonia	$47.03	25 g	98%
TargetMol Chemicals US	United States	$58.00	500 mg	99.84%
MedKoo Biosciences, Inc	United States	$110.00	5 g	98%
AstaTech (2 weeks)	United States	$244.00	5 g	95%
Sigma-Aldrich (Rush Stock)	Germany	$1674.90	100 mg	—
Sigma-Aldrich	Germany	$1674.90	100 mg	—
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	95%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%

Chemical Identity

CAS2971-90-6

PubChem CID18087

DTXSIDDTXSID8041793

FormulaC7H7Cl2NO

Mol. Weight192.04 g/mol

SMILESCC1=C(C(=O)C(=C(N1)C)Cl)Cl

Data Sources

PubChem · compound 18087Retrieved 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

Clopidol (CAS 2971-90-6) https://chemicalindependence.com/chemical/2971-90-6/ PubChem: 18087. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/18087 FDA National Drug Code directory: CAS 2971-90-6. 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 293339 for CAS 2971-90-6. Reporting year: 2024. https://usatrade.census.gov/