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Ethyl (methylthio)acetate

CAS 4455-13-4

Molecular structure of 4455-13-4
US productionNot reported
Import value, 2024$760M
Top sourceChina 33%

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

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 293090 · basket

These shares come from HS customs code 293090, which covers 418 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 33%ChinaES 14%SpainCH 9%SwitzerlandIT 7%ItalyIN 7%India

Why It Matters

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

Chemical Identity

CAS4455-13-4
PubChem CIDNot recorded
DTXSIDDTXSID40196219
FormulaC5H10O2S
Mol. Weight134.19 g/mol
SMILESCCOC(=O)CSC

Data Sources

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Brief citations

Ethyl (methylthio)acetate (CAS 4455-13-4) https://chemicalindependence.com/chemical/4455-13-4/ EPA CompTox (DSSTox): 4455-13-4. Retrieved 2026-04-29. https://comptox.epa.gov/dashboard/chemical/details/DTXSID40196219 US Census international trade: HS 293090 for CAS 4455-13-4. Reporting year: 2024. https://usatrade.census.gov/