2-Thiophenecarbonyl chloride

CAS 5271-67-0

Molecular structure of 5271-67-0
US productionNot reported
Import value, 2024$6.4B
Top sourceSingapore 36%

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 293499 · basket

These shares come from HS customs code 293499, which covers 575 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India

Why It Matters

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

Vendor Pricing

$0.19/gAaron Chemicals LLC
CountryHong Kong
Pack$95.00 / 500 g
Purity95%
Vendors24 available

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

Chemical Identity

CAS5271-67-0
PubChem CIDNot recorded
DTXSIDDTXSID4063749
FormulaC5H3ClOS
Mol. Weight146.59 g/mol
SMILESClC(=O)C1=CC=CS1

Data Sources

Brief citations

2-Thiophenecarbonyl chloride (CAS 5271-67-0) https://chemicalindependence.com/chemical/5271-67-0/ EPA TSCA Inventory: CAS 5271-67-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory US Census international trade: HS 293499 for CAS 5271-67-0. Reporting year: 2024. https://usatrade.census.gov/