4-Bromo-3-thiophenecarboxylic acid
4-Bromo-3-thiophenecarboxylic acid (CAS: 16694-17-0, C5H3BrO2S) is a halogenated heterocyclic compound with a molecular weight of 207.05 g/mol. This thiophene derivative serves as a valuable building block in organic synthesis. It is primarily utilised in the chemical industry for the development of novel compounds and in research laboratories for its synthetic utility.
- IUPAC
- 4-Bromothiophene-3-carboxylic acid
- Synonyms
- 4-Bromothiophene-3-carboxylic acid

Organic Synthesis Intermediate
This compound is a key intermediate in the synthesis of more complex organic molecules. Its reactive bromine atom and carboxylic acid group allow for various functional group transformations.
Heterocyclic Chemistry Research
As a thiophene derivative, it is employed in research focused on heterocyclic chemistry, contributing to the exploration of new materials and chemical entities.
Pharmaceutical Building Block
It acts as a versatile building block in the discovery and development pathways for new pharmaceutical agents and active pharmaceutical ingredients (APIs).
| Molecular weight | 207.05 |
|---|---|
| Empirical formula | C5H3BrO2S |
| Assay | 97% |
| Melting point | 158-163 °C |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Bromo-3-thiophenecarboxylic acid used for?
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4-Bromo-3-thiophenecarboxylic acid is primarily used as a building block in organic synthesis, particularly in heterocyclic chemistry and as an intermediate in the development of pharmaceutical compounds.
What is the CAS number and chemical formula for 4-Bromo-3-thiophenecarboxylic acid?
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The CAS number is 16694-17-0 and the chemical formula is C5H3BrO2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromo-3-thiophenecarboxylic acid with a minimum assay of 97%. We do not represent this product as USP, BP, EP, or pharmaceutical grade.
How should 4-Bromo-3-thiophenecarboxylic acid be handled?
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4-Bromo-3-thiophenecarboxylic acid is classified as a hazardous substance. It is harmful if swallowed, causes skin irritation, and causes serious eye irritation. Handle with appropriate personal protective equipment in a well-ventilated area.
Is this chemical exported or shipped internationally?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 4-Bromo-3-thiophenecarboxylic acid, and ships products worldwide.
How can I request a quote or sample for 4-Bromo-3-thiophenecarboxylic acid?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number (16694-17-0).
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