Chlorpropamide

Drug ingredient

CAS 94-20-2

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

US productionNot reported

Import value, 2024$2.0B

Top sourceIreland 63%

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 293590 · basket

These shares come from HS customs code 293590, which covers 182 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 63%IrelandSG 14%SingaporeIN 7%IndiaCN 7%ChinaCH 2%Switzerland

Portugal
Spain
Italy
Austria
Israel
Hungary
Canada
South Korea
Netherlands
Finland
Poland
Indonesia
Ukraine
Mexico
South Africa
Croatia
Greece
Taiwan
Hong Kong

1 FDA-registered drug labeler

Kothari Phytochemicals International

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

$0.22/gAaron Chemicals LLC

CountryHong Kong

Pack$111.00 / 500 g

Purity98%

Vendors29 available

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

28 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$0.23	500 g	98%
Angene Chemical	China → Hong Kong	$0.23	500 g	99%
Combi-Blocks, Inc.	United States	$0.28	500 g	98%
AA BLOCKS	United States	$0.30	500 g	98%
BLD Pharmatech GmbH	Germany	$0.51	100 g	98%
BLD Pharmatech Ltd.	China	$0.51	100 g	98%
BLD Pharmatech Co., Limited	United States	$1.00	25 g	98%
Ambeed, Inc.	United States	$1.00	25 g	98%
AK Scientific Specialized	United States	$1.03	100 g	95%
AstaTech (2 weeks)	United States	$1.62	100 g	95%
AK Scientific, Inc.	United States	$1.88	100 g	98%
Cayman Europe	Estonia	$3.37	250 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$4.44	25 g	97%
Sigma-Aldrich	Germany	$4.44	25 g	97%
MedKoo Biosciences, Inc	United States	$30.00	25 g	98%
TargetMol Chemicals	China → United States	$31.00	1 g	99.01%
Fulfilled by Molport	Latvia	$60.00	100 mg	98%
MedChemExpress MCE	Sweden	$75.02	500 mg	99.79%
Molnova	China	$76.00	500 mg	99%
Interbioscreen	Hong Kong	$102.00	10 g	95%
Labotest KG	Germany	$217.80	5000 mg	90%
Apexbio Technology LLC	United States	$1000.00	50 mg	99.69%
Angene International Limited	United States	$1920.00	100 mg	99%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
ChemDiv, Inc.	United States	$4070.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	99%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS94-20-2

PubChem CID2727

DTXSIDDTXSID9020322

FormulaC10H13ClN2O3S

Mol. Weight276.74 g/mol

SMILESCCCNC(=O)NS(=O)(=O)C1=CC=C(C=C1)Cl

Data Sources

PubChem · compound 2727Retrieved 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

Chlorpropamide (CAS 94-20-2) https://chemicalindependence.com/chemical/94-20-2/ PubChem: 2727. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/2727 FDA National Drug Code directory: CAS 94-20-2. 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 293590 for CAS 94-20-2. Reporting year: 2024. https://usatrade.census.gov/