4,5-Dibromothiophene-2-sulfonyl chloride

Also known as: 2,3-Dibromothiophene-5-sulfonyl chloride, 2,3-Dibromothiophene-5-sulfonylchloride, 2,3-Dibromothiophene-5-sulphonyl chloride, 4,5-DIBROMOTHIOPHENE-2-SULFONYL CHLORIDE, 4,5-DIBROMOTHIOPHENE-2-SULPHONYL CHLORIDE, 4,5-Dibromo-2-thiophenesulfonyl chloride, 4,5-Dibromothiophene-2-sulfonic acid chloride, 4,5-dibromo-2-thiophenesulfonylchloride, 4,5-dibromo-thiophene-2-sulfonyl chloride, 4,5-dibromo-thiophene-2-sulphonyl chloride, 4,5-dibromothiophene-2-sulfonyl chloride, 5-(Chlorosulphonyl)-2,3-dibromothiophene, BUTTPARK 93\50-57, MFCD00041439

4,5-Dibromothiophene-2-sulfonyl chloride (CAS 81606-31-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4HBr2ClO2S2 and a molecular weight of 340.44100 g/mol. Key properties include a melting point of 71-75 °C, a boiling point of 373.4ºC at 760 mmHg, a density of 2.301g/cm3 and a flash point of 179.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 81606-31-7
Jingsj CID: J-24128-1
Molecular Formula: C₄HBr₂ClO₂S₂
Molecular Weight: 340.44100 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	71-75 °C
Boiling Point	373.4ºC at 760 mmHg
Density	2.301g/cm3
Flash Point	179.6ºC
Exact Mass	337.74700
PSA	70.76000
LogP	4.28140
Refractive Index	1.65

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 4,5-Dibromothiophene-2-sulfonyl chloride?

The CAS number of 4,5-Dibromothiophene-2-sulfonyl chloride is 81606-31-7.

What are the molecular formula and molecular weight of 4,5-Dibromothiophene-2-sulfonyl chloride?

4,5-Dibromothiophene-2-sulfonyl chloride has molecular formula C4HBr2ClO2S2 and molecular weight 340.44100 g/mol.

What are the upstream and downstream products of 4,5-Dibromothiophene-2-sulfonyl chloride?

For 4,5-Dibromothiophene-2-sulfonyl chloride, Upstream Products: 2,3-Dibromothiophene.

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. "4,5-Dibromothiophene-2-sulfonyl chloride (CAS 81606-31-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-24128-1 (accessed 2026-11-09).

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