9,10-Anthracenedione, 2-pentyl-

CAS 13936-21-5

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$35M

Top sourceChina 49%

At least one company claimed its 2019 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291469 · basket

EPA reports by year

2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291469, which covers 31 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).

CN 49%ChinaIN 17%IndiaJP 11%JapanNL 9%NetherlandsIT 8%Italy

Germany
Taiwan
Canada

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Solvay Chemicals Inc Longview Plant Site

Why It Matters

Sectors

Core Chemicals

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

Industrial Uses

•Catalyst in Petrochemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$447.00/gAK Scientific, Inc.

CountryUnited States

Pack$447.00 / 1 g

Purity98%

Vendors5 available

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

4 more vendors

Vendor	Country	$/g	Pack	Purity
A2B Chem LLC	United States	$481.00	1 g	98%
AA BLOCKS	United States	$497.00	1 g	98%
Combi-Blocks (back-ordered)	United States	$648.00	5 g	95%
Angene International Limited	United States	$721.00	1 g	98%

Chemical Identity

CAS13936-21-5

PubChem CID26343

DTXSIDDTXSID1065681

FormulaC19H18O2

Mol. Weight278.3 g/mol

SMILESCCCCCC1=CC2=C(C=C1)C(=O)C3=CC=CC=C3C2=O

Data Sources

EPA CompTox (DSSTox) · DTXSID1065681Retrieved 2026-04-06
PubChem · compound 26343Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

9,10-Anthracenedione, 2-pentyl- (CAS 13936-21-5) https://chemicalindependence.com/chemical/13936-21-5/ EPA CompTox (DSSTox): DTXSID1065681. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1065681 PubChem: 26343. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/26343 EPA Chemical Data Reporting: 13936-21-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13936-21-5. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291469 for CAS 13936-21-5. Reporting year: 2024. https://usatrade.census.gov/