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Isolongifolanone- parent

CAS 23787-90-8

2H-2,4a-Methanonaphthalen-8(5H)-one, 1,3,4,6,7,8a-hexahydro-1,1,5,5-tetramethyl-

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

Molecular structure of 23787-90-8
US productionZero
Import value, 2024$150M
Import volumeCBI
Top sourceIndia 25%

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 291429 · basket

EPA reports by year
2023
US production Zero · Imports Confidential

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
Domestic parents -- activity not disclosed (1)
International Flavors And Fragrances

Why It Matters

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

Chemical Identity

CAS23787-90-8
PubChem CIDNot recorded
DTXSIDDTXSID2047228
FormulaC15H24O
Mol. Weight220.356 g/mol
SMILESCC1(C)C2CCC3(C2)C1C(=O)CCC3(C)C

Data Sources

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Brief citations

Isolongifolanone- parent (CAS 23787-90-8) https://chemicalindependence.com/chemical/23787-90-8/ EPA TSCA Inventory: CAS 23787-90-8. Retrieved 2026-04-29. https://www.epa.gov/tsca-inventory EPA Chemical Data Reporting: 23787-90-8. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291429 for CAS 23787-90-8. Reporting year: 2024. https://usatrade.census.gov/