Cyclohexane, 2-heptyl-3,4-bis(9-isocyanatononyl)-1-pentyl-

CAS 68239-06-5

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$171M

Top sourceHungary 35%

At least one company claimed its 2023 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: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 292910 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 292910, which covers 57 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).

HU 35%HungaryDE 20%GermanyIT 15%ItalyCN 8%ChinaES 7%Spain

Mexico
India
Switzerland
Panama
United Kingdom
Egypt
Ukraine
Poland
Finland
Malaysia
Slovakia
Austria

EPA-registered manufacturers (1)

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

Vandemark Chemical

Why It Matters

Sectors

Plastics & RubberCore 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

•Hardener in Plastics Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$2.02/gA2B Chem LLC (2 weeks)

CountryUnited States

Pack$202.00 / 100 g

Purity98%

Vendors4 available

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

3 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (2 weeks)	United States	$2.11	100 g	98%
Aaron Chemicals LLC	Hong Kong	$2.36	100 g	98%
Combi-Blocks, Inc.	United States	$4.80	100 g	98%

Chemical Identity

CAS68239-06-5

PubChem CID109248

DTXSIDDTXSID90867543

FormulaC38H70N2O2

Mol. Weight587 g/mol

SMILESCCCCCCCC1C(CCC(C1CCCCCCCCCN=C=O)CCCCCCCCCN=C=O)CCCCC

Data Sources

EPA CompTox (DSSTox) · DTXSID90867543Retrieved 2026-04-06
PubChem · compound 109248Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Cyclohexane, 2-heptyl-3,4-bis(9-isocyanatononyl)-1-pentyl- (CAS 68239-06-5) https://chemicalindependence.com/chemical/68239-06-5/ EPA CompTox (DSSTox): DTXSID90867543. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID90867543 PubChem: 109248. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/109248 EPA Chemical Data Reporting: 68239-06-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 68239-06-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292910 for CAS 68239-06-5. Reporting year: 2024. https://usatrade.census.gov/