2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone

Also known as: 2-Bromo-1-(4-(thiophen-2-yl)phenyl)ethanone, 2-Bromo-1-(4-thiophen-2-ylphenyl)ethanone, 2-Bromo-1-(thien-2-ylphenyl)ethan-1-one, 2-Bromo-1-[4-(thien-2-yl)phenyl]ethan-1-one, 2-Bromo-4'-(thien-2-yl)acetophenone, 2-(4-Bromoacetylphenyl)thiophene, 4-(Thien-2-yl)phenacyl bromide, 4-(Thien-2-yl)phenacyl bromide 97%, Ethanone, 2-bromo-1-[4-(2-thienyl)phenyl]-

2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone (CAS 128746-80-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C12H9BrOS and a molecular weight of 281.16800 g/mol. Key properties include a melting point of 115ºC, a boiling point of 367.6ºC at 760mmHg, a density of 1.488g/cm3 and a flash point of 176.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 128746-80-5
Jingsj CID: J-1517002-2
Molecular Formula: C₁₂H₉BrOS
Molecular Weight: 281.16800 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	115ºC
Boiling Point	367.6ºC at 760mmHg
Density	1.488g/cm3
Flash Point	176.1ºC
Exact Mass	279.95600
PSA	45.31000
LogP	3.99270
Vapor Pressure	1.35E-05mmHg at 25°C
Refractive Index	1.627

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-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone?

The CAS number of 2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone is 128746-80-5.

What are the molecular formula and molecular weight of 2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone?

2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone has molecular formula C12H9BrOS and molecular weight 281.16800 g/mol.

What are the upstream and downstream products of 2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone?

For 2-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone, Upstream Products: 1-(4-(thiophen-2-yl)phenyl)ethan-1-one.

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-Bromo-1-[4-(2-thienyl)phenyl]-1-ethanone (CAS 128746-80-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517002-2 (accessed 2026-11-09).

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