Darifenacin

Drug ingredient

CAS 133099-04-4

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

US productionNot reported

Import value, 2024$6.4B

Top sourceSingapore 36%

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 293499 · basket

These shares come from HS customs code 293499, which covers 575 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).

SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India

Finland
Netherlands
Canada
Indonesia
Mexico
Taiwan
South Korea
Austria
Croatia
Sweden
Ukraine
Denmark
Israel
Czech Republic
New Zealand
Hong Kong
Kyrgyzstan
Australia
Portugal
South Africa
Poland
Slovenia
Brazil
Slovakia
Vietnam
Latvia
Malta
Hungary
Romania
Kenya
Belarus
Russia
Turkey
Norway

1 FDA-registered drug labeler

Jubilant Biosys limited

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

$1380.00/gA2B Chem LLC

CountryUnited States

Pack$345.00 / 250 mg

Purity98%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$1480.00	250 mg	98%
TargetMol Chemicals	China → United States	$2895.00	200 mg	99.78%
MedChemExpress MCE	Sweden	$3690.50	100 mg	99.43%
Synthonix	United States	$3700.00	100 mg	95%
Aaron Chemicals LLC	Hong Kong	$4540.00	100 mg	—
TargetMol Chemicals EU	Austria	$5260.00	50 mg	99.78%
Angene International Limited	United States	$5380.00	100 mg	98%
MedKoo Biosciences, Inc	United States	$16500.00	100 mg	98%

Chemical Identity

CAS133099-04-4

PubChem CID444031

DTXSIDDTXSID2048290

FormulaC28H30N2O2

Mol. Weight426.5 g/mol

SMILESC1CN(CC1C(C2=CC=CC=C2)(C3=CC=CC=C3)C(=O)N)CCC4=CC5=C(C=C4)OCC5

Data Sources

PubChem · compound 444031Retrieved 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

Darifenacin (CAS 133099-04-4) https://chemicalindependence.com/chemical/133099-04-4/ PubChem: 444031. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/444031 FDA National Drug Code directory: CAS 133099-04-4. 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 293499 for CAS 133099-04-4. Reporting year: 2024. https://usatrade.census.gov/