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4-Bromothiophene-3-carboxylic acid

Also known as: 4-Bromo-3-thiophenecarboxylic acid, 4-Bromo-3-carboxythiophene, 4-Bromo-3-thenoic acid, 3-Thiophenecarboxylic acid, 4-bromo-

4-Bromothiophene-3-carboxylic acid (CAS 16694-17-0) 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 boiling point of 318.0±27.0 °C at 760 mmHg, a density of 1.9±0.1 g/cm3 and a flash point of 146.1±23.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16694-17-0
Jingsj CID
J-1305092-5
Molecular Formula
C5H3BrO2S
Molecular Weight
207.045 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point318.0±27.0 °C at 760 mmHg
Density1.9±0.1 g/cm3
Flash Point146.1±23.7 °C
Exact Mass205.903702
PSA65.54000
LogP1.71
Vapor Pressure0.0±0.7 mmHg at 25°C
Refractive Index1.650

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 4-Bromothiophene-3-carboxylic acid?

The CAS number of 4-Bromothiophene-3-carboxylic acid is 16694-17-0.

What are the molecular formula and molecular weight of 4-Bromothiophene-3-carboxylic acid?

4-Bromothiophene-3-carboxylic acid has molecular formula C5H3BrO2S and molecular weight 207.045 g/mol.

What are the upstream and downstream products of 4-Bromothiophene-3-carboxylic acid?

For 4-Bromothiophene-3-carboxylic acid, Upstream Products: 3,4-Dibromothiophene, Carbon dioxide, Methyl 4-bromothiophene-3-carboxylate; Downstream Products: 4-bromo-2-isonicotinoylthiophene-3-carboxylic acid, Methyl 4-bromothiophene-3-carboxylate, 4-bromothiophene-3-carbonyl chloride.

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

Last updated:

How to cite: Jingsj. "4-Bromothiophene-3-carboxylic acid (CAS 16694-17-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1305092-5 (accessed 2026-11-09).

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