Diclazuril

Drug ingredient

CAS 101831-37-2

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

US productionNot reported

Import value, 2024$309M

Top sourceChina 40%

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 293369 · basket

These shares come from HS customs code 293369, which covers 192 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 40%ChinaJP 19%JapanIN 15%IndiaES 11%SpainDE 5%Germany

Canada
Austria
United Kingdom
Netherlands
United Arab Emirates
Malaysia
Indonesia
Turkey
Belgium
Ukraine
Hungary
Latvia
Russia
Hong Kong

4 FDA-registered drug labelers

Alivira Animal Health Limited

Changzhou Yabang-Qh Pharmachem Co., Ltd

KALCHEM INTERNATIONAL INC

ZHEJIANG GUOBANG 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

$2.25/gAaron Chemicals LLC

CountryHong Kong

Pack$225.00 / 100 g

Purity98%

Vendors19 available

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

18 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$2.42	100 g	98%
A2B Chem LLC	United States	$4.14	100 g	98%
AA BLOCKS	United States	$4.76	25 g	98%
Ambeed, Inc.	United States	$5.13	100 g	98%
Combi-Blocks, Inc.	United States	$5.20	25 g	98%
Angene International Limited	United States	$13.76	25 g	98%
Cayman Europe	Estonia	$15.85	50 g	95%
MedKoo Biosciences, Inc	United States	$90.00	5 g	98%
TargetMol Chemicals	China → United States	$113.00	1 g	99.67%
TargetMol Chemicals EU	Austria	$162.00	500 mg	99.67%
MedChemExpress MCE	Sweden	$175.45	1 g	99.7%
AstaTech (2 weeks)	United States	$231.60	5 g	98%
Molnova	China	$435.00	200 mg	99%
Apexbio Technology LLC	United States	$1000.00	50 mg	99.88%
Sigma-Aldrich (Rush Stock)	Germany	$1601.50	100 mg	—
Sigma-Aldrich	Germany	$1601.50	100 mg	—
Angene	China → Hong Kong	$4266.67	30 mg	98%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%

Chemical Identity

CAS101831-37-2

PubChem CID456389

DTXSIDDTXSID4046787

FormulaC17H9Cl3N4O2

Mol. Weight407.6 g/mol

SMILESC1=CC(=CC=C1C(C#N)C2=C(C=C(C=C2Cl)N3C(=O)NC(=O)C=N3)Cl)Cl

Data Sources

PubChem · compound 456389Retrieved 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

Diclazuril (CAS 101831-37-2) https://chemicalindependence.com/chemical/101831-37-2/ PubChem: 456389. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/456389 FDA National Drug Code directory: CAS 101831-37-2. 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 293369 for CAS 101831-37-2. Reporting year: 2024. https://usatrade.census.gov/