Butanoic acid, 3-hydroxy-, butyl ester

CAS 53605-94-0

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$81M

Top sourceChina 35%

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 291819 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 291819, which covers 96 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 35%ChinaIN 34%IndiaIT 9%ItalyDE 9%GermanyJP 4%Japan

Switzerland
Ukraine
Colombia
Taiwan
Belgium
Israel
Sweden
Hungary
Ireland
Slovakia

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.

Eastman Chemical

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

Chemical Identity

CAS53605-94-0

PubChem CID103808

DTXSIDDTXSID20886065

FormulaC8H16O3

Mol. Weight160.21 g/mol

SMILESCCCCOC(=O)CC(C)O

Data Sources

EPA CompTox (DSSTox) · DTXSID20886065Retrieved 2026-04-06
PubChem · compound 103808Retrieved 2026-04-06
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

Butanoic acid, 3-hydroxy-, butyl ester (CAS 53605-94-0) https://chemicalindependence.com/chemical/53605-94-0/ EPA CompTox (DSSTox): DTXSID20886065. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID20886065 PubChem: 103808. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/103808 EPA Chemical Data Reporting: 53605-94-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 53605-94-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291819 for CAS 53605-94-0. Reporting year: 2024. https://usatrade.census.gov/