3-Bromothiophene-2-carboxylic acid
3-Bromothiophene-2-carboxylic acid (CAS: 7311-64-0; Formula: C5H3BrO2S; MW: 207.05) is a halogenated heterocyclic compound supplied by Tech Serve Solutions. It functions as a valuable building block in organic synthesis, particularly for the creation of more complex molecules in pharmaceutical research and chemical development. Its structure, featuring both a thiophene ring and a carboxylic acid group, makes it a versatile intermediate for various chemical transformations.

Organic Synthesis Intermediate
This compound serves as a key intermediate in the synthesis of diverse organic molecules. Its functional groups allow for a range of chemical reactions, including esterification, amidation, and cross-coupling reactions.
Pharmaceutical Research
Utilised in the development of new pharmaceutical agents, 3-Bromothiophene-2-carboxylic acid can be incorporated into potential drug candidates. Its heterocyclic nature is often found in biologically active compounds.
Material Science
The unique structure of this thiophene derivative can be explored for applications in material science, potentially in the synthesis of organic electronic materials or polymers.
| Molecular weight | 207.05 |
|---|---|
| Empirical formula | C5H3BrO2S |
| Assay | 97% |
| Melting point | 197-201 °C(lit.) |

Hazard statements
- H317May cause an allergic skin reaction
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 43 |
| Safety statements (S) | 36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 3-Bromothiophene-2-carboxylic acid used for?
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3-Bromothiophene-2-carboxylic acid is primarily used as a building block in organic synthesis and in pharmaceutical research for the development of new chemical entities.
What are the CAS number and formula for 3-Bromothiophene-2-carboxylic acid?
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The CAS number is 7311-64-0 and the empirical formula is C5H3BrO2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Bromothiophene-2-carboxylic acid with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the primary safety concerns when handling 3-Bromothiophene-2-carboxylic acid?
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3-Bromothiophene-2-carboxylic acid is classified as a GHS07 Warning substance, with hazard statement H317 (May cause an allergic skin reaction). Appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, faceshields, and gloves, should be worn. For European classification, it is Xi (Irritant) with risk statement R43 (Risk of sensitisation by skin contact).
How is 3-Bromothiophene-2-carboxylic acid typically shipped or exported?
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As a global supplier, Tech Serve Solutions exports chemicals worldwide. Specific packaging and shipping methods comply with international regulations for hazardous materials.
How can I request a sample or quote for 3-Bromothiophene-2-carboxylic acid?
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To request a sample or a quotation, please use the contact form on our website or reach out to our sales department directly.
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