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2-Cyclohexen-1-one, 3-methyl-6-(1-methylethylidene)-

CAS 491-09-8

Molecular structure of 491-09-8
US productionNot reported
Import value, 2024$150M
Top sourceIndia 25%

EPA lists this chemical as inactive, meaning no company reported making, importing or processing it in the US from 2006 to 2016.

Why supply is unknown

Production is reported production, not a complete census of factories. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 291429 · basket

These shares come from HS customs code 291429, which covers 163 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IN 25%IndiaES 18%SpainCN 12%ChinaIL 11%IsraelCH 9%Switzerland

Why It Matters

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

Chemical Identity

CAS491-09-8
PubChem CIDNot recorded
DTXSIDDTXSID10883402
FormulaC10H14O
Mol. Weight150.221 g/mol
SMILESCC(C)=C1CCC(C)=CC1=O

Data Sources

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Brief citations

2-Cyclohexen-1-one, 3-methyl-6-(1-methylethylidene)- (CAS 491-09-8) https://chemicalindependence.com/chemical/491-09-8/ EPA CompTox (DSSTox): 491-09-8. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID10883402 EPA TSCA Inventory: CAS 491-09-8. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 291429 for CAS 491-09-8. Reporting year: 2024. https://usatrade.census.gov/