5,5′-Bis(trimethylstannyl)-2,2′-bithiophene
5,5′-Bis(trimethylstannyl)-2,2′-bithiophene (CAS: 143367-56-0) is an organotin compound with the molecular formula C14H22S2Sn2. Possessing a molecular weight of 491.87 g/mol, this compound serves as a valuable building block in organic synthesis. Its primary applications lie in materials science, particularly in the development of organic and printed electronics, owing to its thiophene structure and reactive tin functionalities.
- Synonyms
- 143367-56-0C14H22S2Sn2

Organic Electronics Synthesis
This bithiophene derivative acts as a key monomer or building block for synthesising conjugated polymers and organic semiconductors used in applications like organic field-effect transistors (OFETs) and organic photovoltaics (OPVs).
Materials Science Research
Utilised in academic and industrial research for the development of novel materials with specific electronic or optical properties. The stannyl groups facilitate cross-coupling reactions for polymer chain extension.
Synthetic Reagent
Functions as a versatile reagent in organometallic chemistry and synthetic organic chemistry, enabling the formation of new carbon-carbon bonds through reactions such as Stille coupling.
| Molecular weight | 491.87 |
|---|---|
| Empirical formula | C14H22S2Sn2 |
| Assay | 97% |
| Melting point | 96-100 °C |


Hazard statements
- H300Fatal if swallowed
- H310Fatal in contact with skin
- H330Fatal if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P264Wash thoroughly after handling
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P301IF SWALLOWED
| Transport (UN / ADR) | UN 3146 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+,N |
| Risk statements (R) | 26/27/28-50/53 |
| Safety statements (S) | 26-27-28-45-60-61 |
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 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene used for?
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It is primarily used as a building block in materials science for organic and printed electronics, and as a synthetic tool and reagent in organic synthesis, particularly for cross-coupling reactions.
What is the CAS number and chemical formula for 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene?
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The CAS number is 143367-56-0, and the empirical formula (Hill notation) is C14H22S2Sn2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene be handled?
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This compound is classified as Danger (GHS06, GHS09) and is acutely toxic if swallowed, in contact with skin, or if inhaled (H300-H310-H330). It is also very toxic to aquatic life with long-lasting effects (H410). Handle with extreme care, using appropriate personal protective equipment, and avoid release to the environment. Refer to the Safety Data Sheet for full details.
Is this product available for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, pharmaceutical intermediates, and laboratory reagents, including 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene.
How can I request a sample or quote?
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Please contact our sales team via the website or by phone to request a sample or a quotation for 5,5′-Bis(trimethylstannyl)-2,2′-bithiophene.
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