4-Methylpent-3-en-2-one

CAS 141-79-7

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$39M

Top sourceChina 33%

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 291419 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Not published · Imports Not published

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.

Transchem

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$0.30/gAK Scientific, Inc.

CountryUnited States

Pack$150.00 / 500 g

Purity97%

Vendors9 available

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

8 more vendors

Vendor	Country	$/g	Pack	Purity
Fluorochem UK	United Kingdom	$0.50	100 g	—
Sigma-Aldrich (Rush Stock)	Germany	$0.71	100 g	90%
Sigma-Aldrich	Germany	$0.71	100 g	90%
A2B Chem LLC	United States	$0.96	25 g	97%
AA BLOCKS	United States	$1.00	25 g	97%
Interbioscreen	Hong Kong	$10.00	10 g	95%
Otava, Ltd.	Ukraine	$2280.00	50 mg	95%
Otava, Ltd. (2 weeks)	Ukraine	$2724.00	50 mg	95%

Chemical Identity

CAS141-79-7

PubChem CID8858

DTXSIDDTXSID1029170

FormulaC6H10O

Mol. Weight98.14 g/mol

SMILESCC(=CC(=O)C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID1029170Retrieved 2026-04-06
PubChem · compound 8858Retrieved 2026-04-06
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

4-Methylpent-3-en-2-one (CAS 141-79-7) https://chemicalindependence.com/chemical/141-79-7/ EPA CompTox (DSSTox): DTXSID1029170. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1029170 PubChem: 8858. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8858 EPA Chemical Data Reporting: 141-79-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291419 for CAS 141-79-7. Reporting year: 2024. https://usatrade.census.gov/