2-Thiopheneacetic acid
2-Thiopheneacetic acid (CAS: 1918-77-0), with the molecular formula C6H6O2S and a molecular weight of 142.18 g/mol, is a versatile heterocyclic building block. This compound serves as a key intermediate in organic synthesis, particularly within the pharmaceutical and agrochemical industries. Its thiophene ring structure allows for diverse chemical modifications, making it valuable for the development of novel molecules and complex chemical structures.
- IUPAC
- 2-Thienylacetic acid
- Synonyms
- 2-Thienylacetic acid

Pharmaceutical Intermediate
2-Thiopheneacetic acid is utilised in the synthesis of various active pharmaceutical ingredients (APIs) and drug candidates. Its structural features are incorporated into molecules designed for therapeutic applications.
Agrochemical Synthesis
The compound finds application in the development of novel agrochemicals, including herbicides, fungicides, and insecticides. It serves as a precursor for active compounds targeting agricultural pests and diseases.
Material Science Research
Its unique heterocyclic structure makes 2-Thiopheneacetic acid a subject of interest in material science, where it can be employed in the creation of functional materials and polymers with specific electronic or optical properties.
Organic Synthesis Reagent
As a fundamental building block, it is widely used in academic and industrial research laboratories for constructing more complex organic molecules and exploring new synthetic pathways.
| Molecular weight | 142.18 |
|---|---|
| Empirical formula | C6H6O2S |
| Assay | 98% |
| Boiling point | 160 °C/22 mmHg(lit.) |
| Melting point | 63-64 °C(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-37 |
| Safety statements (S) | 26-36/37/39-45 |
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 2-Thiopheneacetic acid used for?
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2-Thiopheneacetic acid is primarily used as a building block in organic synthesis, particularly in the development of pharmaceuticals, agrochemicals, and functional materials.
What is the CAS number and formula for 2-Thiopheneacetic acid?
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The CAS number for 2-Thiopheneacetic acid is 1918-77-0, and its molecular formula is C6H6O2S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Thiopheneacetic acid with an assay of 98%. This product is suitable for research and chemical synthesis and is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should 2-Thiopheneacetic acid be handled safely?
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2-Thiopheneacetic acid is classified as corrosive and can cause severe skin burns and eye damage (H314). Appropriate personal protective equipment, including chemical-resistant gloves, safety goggles, and face shields, must be worn. Handle in a well-ventilated area or under a fume hood. Refer to the Safety Data Sheet (SDS) for comprehensive handling instructions.
Is 2-Thiopheneacetic acid a controlled substance?
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The provided data does not indicate that 2-Thiopheneacetic acid is a controlled substance.
How is 2-Thiopheneacetic acid packed and exported?
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2-Thiopheneacetic acid is packed according to industry standards for hazardous materials (UN 3261, Class 8, PG II) to ensure safe transport. TSS is an experienced global exporter of fine chemicals.
How can I request a quote or sample for 2-Thiopheneacetic acid?
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To request a quote or sample of 2-Thiopheneacetic acid, please contact our sales department via the website or by phone, providing your specific requirements.
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