L-Proline, 5-oxo-, (1R,2S,5R)-5-methyl-2-(1-methylethyl)cyclohexyl ester

CAS 64519-44-4

US productionNot reported

Import value, 2024$907M

Top sourceIreland 47%

This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.

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 293379 · basket

These shares come from HS customs code 293379, which covers 105 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).

IE 47%IrelandBE 19%BelgiumSG 11%SingaporeIT 4%ItalyCH 4%Switzerland

Brazil
Canada
Taiwan
Ukraine
Portugal
Netherlands
South Korea
Israel
Czech Republic
Spain
Finland
Hungary
Malaysia
Australia
Austria
Slovenia

Why It Matters

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

Chemical Identity

CAS64519-44-4

PubChem CIDNot recorded

DTXSIDDTXSID80886687

FormulaC15H25NO3

Mol. Weight267.369 g/mol

SMILESCC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(=O)[C@@H]1CCC(=O)N1

Data Sources

EPA TSCA InventoryRetrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

L-Proline, 5-oxo-, (1R,2S,5R)-5-methyl-2-(1-methylethyl)cyclohexyl ester (CAS 64519-44-4) https://chemicalindependence.com/chemical/64519-44-4/ EPA TSCA Inventory: CAS 64519-44-4. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293379 for CAS 64519-44-4. Reporting year: 2024. https://usatrade.census.gov/