1,5,9-Cyclododecatriene, 1,5,10-trimethyl-

CAS 21115-77-5

EPA’s 2023 records show zero U.S. production of this chemical.

US productionZero

Import value, 2024$90M

Import volumeCBI

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

Top sourceJapan 21%

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. 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 290219 · basket

EPA reports by year

2023: US production Zero · Imports Confidential
2019: US production Confidential · Imports 213.9K lb

These shares come from HS customs code 290219, which covers 108 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).

JP 21%JapanBR 12%BrazilTW 12%TaiwanKR 11%South KoreaDE 9%Germany

Russia
United Kingdom
Indonesia
South Africa
Ukraine
Madagascar
Hungary
Hong Kong
Czech Republic
Israel

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

International Flavors And Fragrances

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.

Iff Chemical Holdings

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

•Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing as a reactant

Chemical Identity

CAS21115-77-5

PubChem CID6436539

DTXSIDDTXSID9066679

FormulaC15H24

Mol. Weight204.35 g/mol

SMILESCC1=CCCC=C(CCC(=CCC1)C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID9066679Retrieved 2026-04-06
PubChem · compound 6436539Retrieved 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

1,5,9-Cyclododecatriene, 1,5,10-trimethyl- (CAS 21115-77-5) https://chemicalindependence.com/chemical/21115-77-5/ EPA CompTox (DSSTox): DTXSID9066679. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID9066679 PubChem: 6436539. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6436539 EPA Chemical Data Reporting: 21115-77-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 21115-77-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 290219 for CAS 21115-77-5. Reporting year: 2024. https://usatrade.census.gov/