3,2′:5′,3″-Terthiophene
3,2′:5′,3″-Terthiophene (CAS 81294-16-8), a C12H8S3 organic compound with a molecular weight of 248.39, is a key heterocyclic building block. This terthiophene derivative offers unique electronic and structural properties, making it valuable in organic electronics research and materials science. It serves as a versatile intermediate in the synthesis of more complex conjugated systems and polymers for applications in organic semiconductors, photovoltaic devices, and field-effect transistors.
- Synonyms
- 81294-16-8C12H8S3

Organic Electronics
Utilised as a fundamental building block in the synthesis of organic semiconductors for applications such as organic light-emitting diodes (OLEDs) and organic photovoltaic cells (OPVs). Its conjugated structure is crucial for charge transport properties.
Materials Science Research
Employed in the development of novel conjugated polymers and materials with tailored electronic and optical properties. It can be incorporated into polymer backbones to influence conductivity and light absorption/emission characteristics.
Chemical Synthesis Intermediate
Serves as a reactive intermediate in the synthesis of more complex thiophene-based molecules and supramolecular structures. Its well-defined terthiophene unit allows for controlled derivatisation and functionalisation.
| Molecular weight | 248.39 |
|---|---|
| Empirical formula | C12H8S3 |
| Assay | 97% |
| Melting point | 175-181 °C(lit.) |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22 |
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 3,2′:5′,3″-Terthiophene used for?
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3,2′:5′,3″-Terthiophene is primarily used as a building block in organic electronics, materials science research, and as a chemical synthesis intermediate for creating complex conjugated systems.
What are the CAS number and molecular formula for 3,2′:5′,3″-Terthiophene?
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The CAS number is 81294-16-8, and the empirical formula is C12H8S3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,2′:5′,3″-Terthiophene with a minimum assay of 97%. This product is suitable for research and chemical synthesis; we do not represent it as USP, BP, EP, or other pharmacopoeial grades.
How should 3,2′:5′,3″-Terthiophene be handled?
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Danger! 3,2′:5′,3″-Terthiophene is toxic if swallowed. Handle with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, face shields, and gloves. Ensure adequate ventilation and avoid dust formation. Refer to the safety data sheet for full handling instructions.
Is this chemical suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and can arrange shipment of 3,2′:5′,3″-Terthiophene to your location.
How can I request a sample or quote?
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To request a sample or a quote for 3,2′:5′,3″-Terthiophene, please contact our sales team through the website or by phone, providing your specific requirements.
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