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5-Bromo-2-thiophenecarboxylic acid

Also known as: 5-Bromothiophene-2-carboxylic acid, 5-Bromothiophen-2-carboxylic acid, AKOS 92445, BUTTPARK 97\04-65, OTAVA-BB BB7110952611, RARECHEM AL BO 1503, 2-Thiophenecarboxylic acid, 5-bromo-, 5-Bromothiophene-2-carboxylicacid

5-Bromo-2-thiophenecarboxylic acid (CAS 7311-63-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3BrO2S and a molecular weight of 207.05 g/mol. Key properties include a melting point of 140 °C, a boiling point of 318.9±27.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 146.7±23.7 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
7311-63-9
Jingsj CID
J-4842-0
Molecular Formula
C5H3BrO2S
Molecular Weight
207.05 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140 °C
Boiling Point318.9±27.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point146.7±23.7 °C
Exact Mass205.903702
PSA65.54000
LogP2.47
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.650

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of 5-Bromo-2-thiophenecarboxylic acid?

The CAS number of 5-Bromo-2-thiophenecarboxylic acid is 7311-63-9.

What are the molecular formula and molecular weight of 5-Bromo-2-thiophenecarboxylic acid?

5-Bromo-2-thiophenecarboxylic acid has molecular formula C5H3BrO2S and molecular weight 207.05 g/mol.

Is 5-Bromo-2-thiophenecarboxylic acid hazardous?

5-Bromo-2-thiophenecarboxylic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of 5-Bromo-2-thiophenecarboxylic acid?

For 5-Bromo-2-thiophenecarboxylic acid, Upstream Products: 5-Bromothiophene-2-carbaldehyde, 2-Thiophenecarboxylic acid, 2,5-Dibromothiophene; Downstream Products: 5-(3-Thienyl)thiophene-2-carboxylic acid, Methyl 5-bromo-4-fluorothiophene-2-carboxylate, 5-Acetylthiophene-2-carboxylic acid.

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

Last updated:

How to cite: Jingsj. "5-Bromo-2-thiophenecarboxylic acid (CAS 7311-63-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4842-0 (accessed 2026-11-09).

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