Oxacycloheptadec-10-en-2-one

CAS 28645-51-4

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$286M

Top sourceChina 48%

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 293220 · basket

EPA reports by year

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

These shares come from HS customs code 293220, which covers 151 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 48%ChinaIN 15%IndiaJP 7%JapanGB 7%United KingdomCH 7%Switzerland

Mexico
Austria
Indonesia
Czech Republic
Slovakia
Malaysia
Israel
Poland
Vietnam
Ukraine
South Africa
Singapore
Russia
Lithuania
Hungary
Belarus
Brazil
Australia

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

Why It Matters

Sectors

Consumer ProductsCore 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

Used in 2 sectors as 1 functional role.

•Odor agents in Soap, Cleaning Compound, and Toilet Preparation Manufacturing (3%)Processing—incorporation into formulation, mixture, or reaction product
•Odor agents in All Other Chemical Product and Preparation Manufacturing (80%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS28645-51-4

PubChem CID94396

DTXSIDDTXSID3051965

FormulaC16H28O2

Mol. Weight252.39 g/mol

SMILESC1CCCC=CCCCCCCOC(=O)CCC1

Data Sources

EPA CompTox (DSSTox) · DTXSID3051965Retrieved 2026-04-06
PubChem · compound 94396Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · 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

Oxacycloheptadec-10-en-2-one (CAS 28645-51-4) https://chemicalindependence.com/chemical/28645-51-4/ EPA CompTox (DSSTox): DTXSID3051965. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID3051965 PubChem: 94396. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/94396 EPA Chemical Data Reporting: 28645-51-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 28645-51-4. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293220 for CAS 28645-51-4. Reporting year: 2024. https://usatrade.census.gov/