3,3′-Dibromo-2,2′-bithiophene
3,3′-Dibromo-2,2′-bithiophene (CAS: 51751-44-1) is a versatile organic compound with the molecular formula C8H4Br2S2 and a molecular weight of 324.06 g/mol. This dibrominated bithiophene derivative serves as a key building block in materials science and organic electronics. It is particularly valuable for its role in the synthesis of conjugated polymers and advanced organic semiconductor materials, facilitating research and development in these fields.
- Synonyms
- 51751-44-1C8H4Br2S2

Organic Semiconductor Synthesis
This compound is a crucial monomer for synthesising organic semiconductors, including conjugated polymers and small molecules. It enables the development of materials used in organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
Materials Science Research
As a functionalised bithiophene, it is employed in the creation of novel materials with specific electronic and optical properties. Its structure facilitates polymerisation and cross-coupling reactions for advanced material design.
Synthetic Intermediates
3,3′-Dibromo-2,2′-bithiophene acts as a valuable intermediate in multi-step organic syntheses. Its reactive bromine atoms allow for further functionalisation, enabling the construction of complex molecular architectures.
| Molecular weight | 324.06 |
|---|---|
| Empirical formula | C8H4Br2S2 |
| Assay | 97% |
| Form | powder |
| Melting point | 97-101 °C |


Hazard statements
- H301Toxic if swallowed
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25-41 |
| Safety statements (S) | 26-39 |
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 3,3′-Dibromo-2,2′-bithiophene used for?
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3,3′-Dibromo-2,2′-bithiophene is primarily used as a monomer and intermediate in the synthesis of organic semiconductors, conjugated polymers, and advanced materials for organic electronics research.
What is the CAS number and formula for 3,3′-Dibromo-2,2′-bithiophene?
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The CAS number is 51751-44-1 and the empirical formula is C8H4Br2S2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,3′-Dibromo-2,2′-bithiophene with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
What are the safety and handling considerations for 3,3′-Dibromo-2,2′-bithiophene?
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This compound is classified as Danger, with hazards including H301 (Toxic if swallowed) and H318 (Causes serious eye damage). Always handle with appropriate personal protective equipment, including eye protection, and follow safety guidelines outlined in the Safety Data Sheet (SDS).
How is 3,3′-Dibromo-2,2′-bithiophene packed and shipped?
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This chemical is shipped as UN 2811, Class 6.1, Packing Group III. It is packed according to international regulations for hazardous materials, suitable for global export.
How can I request a sample or quote for 3,3′-Dibromo-2,2′-bithiophene?
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Please contact our sales team via the website or direct email to request a quotation or sample of 3,3′-Dibromo-2,2′-bithiophene.
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