2,3-Dibromo-4-methylthiophene

2,3-二溴-4-甲基噻吩

Also known as: 2,3-Dibromo-4-methylthiophene, Thiophene, 2,3-dibromo-4-methyl-

2,3-Dibromo-4-methylthiophene (CAS 125257-38-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H4Br2S and a molecular weight of 255.958 g/mol. It is also known as Thiophene, 2,3-dibromo-4-methyl-. Key properties include a boiling point of 241.4±35.0 °C at 760 mmHg, a density of 2.0±0.1 g/cm3 and a flash point of 99.8±25.9 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
125257-38-7
Jingsj CID
J-1427153-3
Molecular Formula
C5H4Br2S
Chinese Name
2,3-二溴-4-甲基噻吩
Molecular Weight
255.958 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point241.4±35.0 °C at 760 mmHg
Density2.0±0.1 g/cm3
Flash Point99.8±25.9 °C

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2,3-Dibromo-4-methylthiophene?

The CAS number of 2,3-Dibromo-4-methylthiophene is 125257-38-7.

What are the molecular formula and molecular weight of 2,3-Dibromo-4-methylthiophene?

2,3-Dibromo-4-methylthiophene has molecular formula C5H4Br2S and molecular weight 255.958 g/mol.

Is 2,3-Dibromo-4-methylthiophene hazardous?

2,3-Dibromo-4-methylthiophene has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "2,3-Dibromo-4-methylthiophene (CAS 125257-38-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1427153-3 (accessed 2026-10-22).

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