Chlorpromazine

Drug ingredient

CAS 50-53-3

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

US productionNot reported

Import value, 2024$13M

Top sourceGermany 54%

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 293430 · basket

These shares come from HS customs code 293430, which covers 19 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).

DE 54%GermanyIT 24%ItalyIN 8%IndiaCN 5%ChinaZA 4%South Africa

Canada
Switzerland
United Kingdom

1 FDA-registered drug labeler

Medisca 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

$51.20/gAK Scientific Specialized

CountryUnited States

Pack$1280.00 / 25 g

Purity95%

Vendors14 available

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

13 more vendors

Vendor	Country	$/g	Pack	Purity
Combi-Blocks, Inc.	United States	$51.20	25 g	98%
A2B Chem LLC	United States	$54.20	25 g	99%
AA BLOCKS	United States	$57.20	25 g	99%
AK Scientific, Inc.	United States	$68.60	25 g	98%
Aaron Chemicals LLC	Hong Kong	$152.20	5 g	95%
Angene Chemical	China → Hong Kong	$153.20	5 g	95%
Fulfilled by Molport	Latvia	$160.00	250 mg	98%
AstaTech (2 weeks)	United States	$165.60	5 g	95%
MedKoo Biosciences, Inc	United States	$210.00	5 g	98%
Apexbio Technology LLC	United States	$320.00	500 mg	99.75%
Angene International Limited	United States	$1400.00	100 mg	99%
MedChemExpress MCE	Sweden	$2444.20	50 mg	99.75%
Key Organics Ltd.	United Kingdom	$6900.00	10 mg	97%

Chemical Identity

CAS50-53-3

PubChem CID2726

DTXSIDDTXSID0022808

FormulaC17H19ClN2S

Mol. Weight318.9 g/mol

SMILESCN(C)CCCN1C2=CC=CC=C2SC3=C1C=C(C=C3)Cl

Data Sources

PubChem · compound 2726Retrieved 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

Chlorpromazine (CAS 50-53-3) https://chemicalindependence.com/chemical/50-53-3/ PubChem: 2726. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/2726 FDA National Drug Code directory: CAS 50-53-3. 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 293430 for CAS 50-53-3. Reporting year: 2024. https://usatrade.census.gov/