2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene]

Also known as: 4-BROMO-1,1-BIS(3-METHYL-2-THIENYL)-1-BUTENE, 1-bromo-4,4-bis(3-methylthien-2-yl)but-3-ene, 1-bromo-4,4-di(3-methylthien-2-yl)but-3-en, 2,2'-(4-Bromobut-1-ene-1,1-diyl)bis(3-methylthiophene), 2-[4-bromo-1-(3-methylthien-2-yl)but-1-enyl]-3-methylthiophene, 2-[4-bromo-1-(3-methylthiophen-2-yl)but-1-enyl]-3-methylthiophene, 4,4-bis(3-methyl-thiophen-2-yl)-but-3-en-1-yl bromide, 4-bromo-1,1-bis(3-methyl-2-thienyl)-1-butene, THI024, THIOPHENE, 2,2'-(4-BROMO-1-BUTENYLIDENE)BIS[3-METHYL-

2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene] (CAS 109857-81-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C14H15BrS2 and a molecular weight of 327.30300 g/mol. Key properties include a boiling point of 423.4ºC at 760 mmHg, a density of 1.374 and a flash point of 209.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 109857-81-0
Jingsj CID: J-1065628-7
Molecular Formula: C₁₄H₁₅BrS₂
Molecular Weight: 327.30300 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	423.4ºC at 760 mmHg
Density	1.374
Flash Point	209.8ºC
Exact Mass	325.98000
PSA	56.48000
LogP	5.64310
Vapor Pressure	5.54E-07mmHg at 25°C
Refractive Index	1.623

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 2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene]?

The CAS number of 2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene] is 109857-81-0.

What are the molecular formula and molecular weight of 2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene]?

2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene] has molecular formula C14H15BrS2 and molecular weight 327.30300 g/mol.

What are the upstream and downstream products of 2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene]?

For 2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene], Upstream Products: 4-Bromo-1,1-bis(3-methylthiophen-2-yl)butan-1-ol, 2-Bromo-3-methylthiophene, n-Butyllithium; Downstream Products: Tiagabine ethyl ester, Tiagabine.

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. "2,2'-(4-Bromo-1-butenylidene)bis[3-methylthiophene] (CAS 109857-81-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1065628-7 (accessed 2026-11-09).

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