Pirenzepine

Drug ingredient

CAS 28797-61-7

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

US productionNot reported

Import value, 2024$7.6B

Top sourceIreland 61%

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 293359 · basket

These shares come from HS customs code 293359, which covers 295 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 61%IrelandCH 30%SwitzerlandGB 2%United KingdomCN 2%ChinaIN 1%India

Israel
Bulgaria
Japan
Spain
Sweden
Canada
Taiwan
Finland
Portugal
Mexico
Belgium
Hungary
Austria
Brazil
Ukraine
Croatia
Malta
South Korea
South Africa
Denmark
Czech Republic
Malaysia
Argentina
Poland
Cameroon
Australia
Hong Kong
Slovakia
Latvia

2 FDA-registered drug labelers

Archimica S.p.A.

Excella GmbH & Co. KG

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

$646.00/gA2B Chem LLC (1 week)

CountryUnited States

Pack$323.00 / 500 mg

Purity98%

Vendors6 available

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

5 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (1 week)	United States	$710.00	500 mg	98%
MedChemExpress MCE	Sweden	$721.16	500 mg	99.13%
Angene International Limited	United States	$1054.00	500 mg	98%
Combi-Blocks, Inc.	United States	$1200.00	100 mg	95%
MedKoo Biosciences, Inc	United States	$4250.00	1 g	98%

Chemical Identity

CAS28797-61-7

PubChem CID4848

DTXSIDDTXSID7023487

FormulaC19H21N5O2

Mol. Weight351.4 g/mol

SMILESCN1CCN(CC1)CC(=O)N2C3=CC=CC=C3C(=O)NC4=C2N=CC=C4

Data Sources

PubChem · compound 4848Retrieved 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

Pirenzepine (CAS 28797-61-7) https://chemicalindependence.com/chemical/28797-61-7/ PubChem: 4848. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/4848 FDA National Drug Code directory: CAS 28797-61-7. 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 293359 for CAS 28797-61-7. Reporting year: 2024. https://usatrade.census.gov/