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2-Bromo-3-thiophenecarboxylic acid

Also known as: 2-Bromothiophene-3-carboxylic acid, 2-Bromo-3-thenoic acid, 2-Bromo-3-carboxythiophene, 3-Thiophenecarboxylic acid, 2-bromo-, 2-Bromo-thiophene-3-carboxylic acid, 2-Bromothiophene-3-carboxylic acid 97%, MFCD05865213

2-Bromo-3-thiophenecarboxylic acid (CAS 24287-95-4) 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 207.045 g/mol. Key properties include a melting point of 178-182ºC(lit.), a boiling point of 313.2±27.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 143.2±23.7 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed, H317 — May cause an allergic skin reaction and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
24287-95-4
Jingsj CID
J-17421-0
Molecular Formula
C5H3BrO2S
Molecular Weight
207.045 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point178-182ºC(lit.)
Boiling Point313.2±27.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point143.2±23.7 °C
Exact Mass205.903702
PSA65.54000
LogP1.84
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.650

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H317 — May cause an allergic skin reaction
  • H319 — Causes serious eye irritation

Customs & Trade Information

HS Code2934999090
Summary2934999090. 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-3-thiophenecarboxylic acid?

The CAS number of 2-Bromo-3-thiophenecarboxylic acid is 24287-95-4.

What are the molecular formula and molecular weight of 2-Bromo-3-thiophenecarboxylic acid?

2-Bromo-3-thiophenecarboxylic acid has molecular formula C5H3BrO2S and molecular weight 207.045 g/mol.

Is 2-Bromo-3-thiophenecarboxylic acid hazardous?

2-Bromo-3-thiophenecarboxylic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H317 — May cause an allergic skin reaction; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 2-Bromo-3-thiophenecarboxylic acid?

For 2-Bromo-3-thiophenecarboxylic acid, Upstream Products: Thiophene-3-carboxylic acid, 2-Bromothiophene-3-carbaldehyde, 3-(Diethoxymethyl)thiophene; Downstream Products: Methyl 2-bromothiophene-3-carboxylate.

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

Last updated:

How to cite: Jingsj. "2-Bromo-3-thiophenecarboxylic acid (CAS 24287-95-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17421-0 (accessed 2026-11-09).

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