3-Methylcholanthrene

Drug ingredient

CAS 56-49-5

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

US productionNot reported

Import value, 2024$68M

Top sourceIndia 35%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 290290 · basket

These shares come from HS customs code 290290, which covers 171 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).

IN 35%IndiaTW 11%TaiwanES 10%SpainDE 10%GermanyCN 8%China

Czech Republic
Netherlands
Switzerland
Pakistan
United Kingdom
Austria
Denmark
Indonesia
Lithuania
Hong Kong
Finland

1 FDA-registered drug labeler

Professional Complementary Health Formulas

Why It Matters

Sectors

Health

Downstream Uses

Appears in 1 drug and cosmetic product listings (FDA).

•Large Ring Combination 9302

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

$5177.96/gSigma-Aldrich (Rush Stock)

CountryGermany

Pack$1294.49 / 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
Sigma-Aldrich	Germany	$5177.96	250 mg	98%
AstaTech (2 weeks)	United States	$19080.00	50 mg	95%
A2B Chem LLC (1 week)	United States	$19400.00	10 mg	98%
TargetMol Chemicals	China → United States	$19800.00	100 mg	99.49%
AA BLOCKS (1 week)	United States	$21600.00	10 mg	98%
Aaron Chemicals LLC	Hong Kong	$22700.00	10 mg	98%
Angene Chemical	China → Hong Kong	$26100.00	10 mg	98%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS56-49-5

PubChem CID1674

DTXSIDDTXSID0020862

FormulaC21H16

Mol. Weight268.4 g/mol

SMILESCC1=C2CCC3=C2C(=CC4=C3C=CC5=CC=CC=C54)C=C1

Data Sources

PubChem · compound 1674Retrieved 2026-04-07
EPA TSCA InventoryRetrieved 2026-04-24
FDA National Drug Code directoryRetrieved 2026-04-07
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

← Back to Dashboard ← Back to Health

Brief citations

3-Methylcholanthrene (CAS 56-49-5) https://chemicalindependence.com/chemical/56-49-5/ PubChem: 1674. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/1674 EPA TSCA Inventory: CAS 56-49-5. Retrieved 2026-04-24. https://www.epa.gov/tsca-inventory FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/ US Census international trade: HS 290290 for CAS 56-49-5. Reporting year: 2024. https://usatrade.census.gov/