(Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one

CAS 81786-73-4

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$39M

Import volume8.3M lb

Import dependency100%

Top sourceChina 33%

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.

(Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one · US import value by year

2013: $51M · Peak 2022: $53M · 2024: $39M · 2025: $36M

Where It Comes From

Customs basis: HS 291419 · basket

EPA reports by year

2023: US production Zero · Imports 8.3M lb

These shares come from HS customs code 291419, which covers 131 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 33%ChinaDE 29%GermanyIN 26%IndiaGB 3%United KingdomJP 2%Japan

Netherlands
Italy
Brazil
South Africa
Turkey
Moldova
Canada
Armenia
Slovakia
Finland
Hong Kong
Mexico
Ukraine

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.

Reckitt Benckiser

EPA-registered importers (2)

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

Reckitt Benckiser Group · GB United Kingdom

Givaudan Fragrances

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

•Fragrance in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS81786-73-4

PubChem CIDNot recorded

DTXSIDDTXSID8052562

FormulaC12H22O

Mol. Weight182.307 g/mol

SMILESCC(\C(C)=C(\C)C(C)=O)C(C)(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID8052562Retrieved 2026-10-04
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

(Z)-3,4,5,6,6-Pentamethylhept-3-en-2-one (CAS 81786-73-4) https://chemicalindependence.com/chemical/81786-73-4/ EPA CompTox (DSSTox): DTXSID8052562. Retrieved 2026-10-04. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8052562 EPA Chemical Data Reporting: 81786-73-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 81786-73-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291419 for CAS 81786-73-4. Reporting year: 2024. https://usatrade.census.gov/