3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride

Also known as: 3,4-dichloro-1-benzothiophene-2-carbonyl chloride, 3,4-dichloro-2-benzothiophenecarbonyl chloride, 3,4-dichlorobenzothiophene-2-carbonyl chloride, Benzo[b]thiophene-2-carbonyl chloride, 3,4-dichloro-

3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride (CAS 34576-86-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H3Cl3OS and a molecular weight of 265.54400 g/mol. Key properties include a boiling point of 375ºC at 760mmHg, a density of 1.625g/cm3 and a flash point of 180.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 34576-86-8
Jingsj CID: J-16612-1
Molecular Formula: C₉H₃Cl₃OS
Molecular Weight: 265.54400 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	375ºC at 760mmHg
Density	1.625g/cm3
Flash Point	180.6ºC
Exact Mass	263.89700
PSA	45.31000
LogP	4.58710
Refractive Index	1.691

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride?

The CAS number of 3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride is 34576-86-8.

What are the molecular formula and molecular weight of 3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride?

3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride has molecular formula C9H3Cl3OS and molecular weight 265.54400 g/mol.

What are the upstream and downstream products of 3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride?

For 3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride, Upstream Products: 2-Chlorocinnamic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "3,4-dichlorobenzo[b]thiophene-2-carbonyl chloride (CAS 34576-86-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-16612-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.