3-Butylthiophene
3-Butylthiophene (CAS: 34722-01-5, C8H12S, MW: 140.25) is a versatile heterocyclic organic compound. Featuring a thiophene ring substituted with a butyl group, it serves as a valuable building block in organic synthesis. Its properties make it suitable for applications in the development of novel materials and complex molecules within research and industrial settings.

Organic Synthesis
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its thiophene core and alkyl chain offer specific reactivity for various chemical transformations.
Materials Science
Can be incorporated into polymers or functional materials. The thiophene moiety is known for its electronic properties, making it of interest for conductive polymers and organic electronics.
Pharmaceutical Research
Serves as a foundational structure for designing and synthesising potential pharmaceutical agents. Heterocyclic compounds like thiophenes are common scaffolds in medicinal chemistry.
| Molecular weight | 140.25 |
|---|---|
| Empirical formula | C8H12S |
| Assay | 96% |
| Boiling point | 181-183 °C(lit.) |
| Density | 0.957 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.501(lit.) |

Hazard statements
- H226Flammable liquid and vapour
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 60 °C / 140 °F |
| Transport (UN / ADR) | NA 1993 / PGIII |
| 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-Butylthiophene used for?
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3-Butylthiophene is primarily used as a building block in organic synthesis for creating complex molecules, with potential applications in materials science and pharmaceutical research.
What are the CAS number and formula for 3-Butylthiophene?
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The CAS number for 3-Butylthiophene is 34722-01-5, and its empirical formula is C8H12S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Butylthiophene with a minimum assay of 96%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should 3-Butylthiophene be handled safely?
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3-Butylthiophene is a flammable liquid and vapour (H226). Handle with appropriate personal protective equipment, including eyeshields and gloves, in a well-ventilated area. Refer to the Safety Data Sheet for full handling instructions.
How is 3-Butylthiophene packed and shipped?
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3-Butylthiophene is shipped according to relevant regulations for flammable liquids. For export, it is packaged to meet international shipping standards. Please contact us for specific shipping details.
How can I request a sample or quote for 3-Butylthiophene?
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To request a sample or a quotation for 3-Butylthiophene, please contact our sales team via the website or by phone, providing your required quantity and delivery location.
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