3-Thiophenecarboxylic acid
3-Thiophenecarboxylic acid (CAS: 88-13-1; Formula: C5H4O2S) is a heterocyclic organic compound with a molecular weight of 128.15 g/mol. This solid material is characterised by its solubility in water. As a valuable building block in chemical synthesis, it finds primary application in the development of complex organic molecules and heterocyclic compounds.

Organic Synthesis Intermediate
3-Thiophenecarboxylic acid serves as a crucial intermediate in the synthesis of various organic compounds. Its thiophene ring structure allows for diverse chemical transformations, making it valuable in constructing more complex molecular architectures.
Heterocyclic Chemistry
This compound is a useful building block in heterocyclic chemistry. It can be employed in reactions to introduce the thiophene moiety into new molecular frameworks, contributing to the discovery of novel compounds with potential applications.
Pharmaceutical Research
While specific applications are proprietary, thiophene derivatives are known to feature in pharmacologically active compounds. 3-Thiophenecarboxylic acid may be utilised in early-stage pharmaceutical research and development as a starting material or intermediate.
| Molecular weight | 128.15 |
|---|---|
| Empirical formula | C5H4O2S |
| Assay | 99% |
| Solubility | water: soluble0.2 g/10 mL, clear to almost clear, colorless to slightly brownish-yellow |
| Melting point | 136-141 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
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-Thiophenecarboxylic acid used for?
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3-Thiophenecarboxylic acid is primarily used as a building block in organic synthesis and heterocyclic chemistry. It is employed in the development of new organic molecules, potentially including pharmaceutical research.
What is the CAS number and formula for 3-Thiophenecarboxylic acid?
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The CAS number for 3-Thiophenecarboxylic acid is 88-13-1, and its molecular formula is C5H4O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Thiophenecarboxylic acid with an assay of 99%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
What are the safety and handling considerations for 3-Thiophenecarboxylic acid?
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Handling 3-Thiophenecarboxylic acid requires appropriate personal protective equipment, including eyeshields and gloves. Respiratory protection such as a type N95 (US) or P1 (EN143) respirator filter should be used. Refer to the Safety Data Sheet (SDS) for comprehensive information.
Is 3-Thiophenecarboxylic acid a controlled substance?
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The provided data does not indicate that 3-Thiophenecarboxylic acid is a controlled substance.
How is 3-Thiophenecarboxylic acid packed and shipped?
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3-Thiophenecarboxylic acid is carefully packed to ensure safe transit and is exported globally by Tech Serve Solutions. Specific packaging details are available upon request.
How can I request a quote or sample?
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To request a quote or a sample of 3-Thiophenecarboxylic acid, please contact our sales team through the website or by phone.
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