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Propanoic acid, 3-mercapto-, octadecyl ester

CAS 31778-15-1

Molecular structure of 31778-15-1
US productionNot reported
Import value, 2024$760M
Top sourceChina 33%

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 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.

Vendor Pricing

$0.62/gA2B Chem LLC
CountryUnited States
Pack$309.00 / 500 g
Purity85%
Vendors7 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

6 more vendors
VendorCountry$/gPackPurity
Aaron Chemicals LLCHong Kong$1.27100 g—
Angene ChemicalChina → Hong Kong$1.38100 g—
AA BLOCKSUnited States$1.79100 g85%
AK Scientific, Inc.United States$7.005 g85%
Angene International LimitedUnited States$18.005 g85%
AngeneChina → Hong Kong$4266.6730 mg—

Chemical Identity

CAS31778-15-1
PubChem CIDNot recorded
DTXSIDDTXSID4067646
FormulaC21H42O2S
Mol. Weight358.63 g/mol
SMILESCCCCCCCCCCCCCCCCCCOC(=O)CCS

Data Sources

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Brief citations

Propanoic acid, 3-mercapto-, octadecyl ester (CAS 31778-15-1) https://chemicalindependence.com/chemical/31778-15-1/ EPA TSCA Inventory: CAS 31778-15-1. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293090 for CAS 31778-15-1. Reporting year: 2024. https://usatrade.census.gov/