4,4'-Dibromo-3,3'-bithiophene

4,4'-二溴-3,3'-联噻吩

Also known as: 4,4'-Dibromo-3,3'-bithienyl, 4,4'-Dibromo-3,3'-dithienyl, 3-bromo-4-(4-bromothiophen-3-yl)thiophene, 3,3'-Bithiophene, 4,4'-dibromo-

4,4'-Dibromo-3,3'-bithiophene (CAS 5556-13-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H4Br2S2 and a molecular weight of 324.05500 g/mol. It is also known as 4,4'-Dibromo-3,3'-bithienyl, 4,4'-Dibromo-3,3'-dithienyl and 3-bromo-4-(4-bromothiophen-3-yl)thiophene. Key property: a melting point of 127 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5556-13-8
Jingsj CID: J-1133895-0
Molecular Formula: C₈H₄Br₂S₂
Chinese Name: 4,4'-二溴-3,3'-联噻吩
Molecular Weight: 324.05500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	127 °C

Frequently Asked Questions

What is the CAS number of 4,4'-Dibromo-3,3'-bithiophene?

The CAS number of 4,4'-Dibromo-3,3'-bithiophene is 5556-13-8.

What are the molecular formula and molecular weight of 4,4'-Dibromo-3,3'-bithiophene?

4,4'-Dibromo-3,3'-bithiophene has molecular formula C8H4Br2S2 and molecular weight 324.05500 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4,4'-Dibromo-3,3'-bithiophene (CAS 5556-13-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1133895-0 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.