4-(2-bromophenyl)-1-butene
4-(2-bromophenyl)-1-butene (CAS 71813-50-8) is an organobromine compound with the molecular formula BrC6H4CH2CH2CH=CH2 and a molecular weight of 211.10 g/mol. This chemical serves as a versatile building block in organic synthesis, particularly within the fields of chemical research and the development of complex organic molecules. Its structure, featuring both an alkenyl group and an aryl bromide, allows for diverse synthetic transformations.
- IUPAC
- 1-Bromo-2-(3-butenyl)benzene

Organic Synthesis Intermediate
This compound is valuable as an intermediate in the synthesis of more complex organic molecules. The presence of both the terminal alkene and the aryl bromide functional groups allows for a range of coupling and addition reactions.
Building Block for Specialty Chemicals
As an organic building block, it can be utilised in the preparation of specialty chemicals. Its structure lends itself to incorporation into pharmaceuticals, agrochemicals, or materials science research where specific aryl-alkenyl moieties are required.
Research and Development
4-(2-bromophenyl)-1-butene is employed in academic and industrial R&D laboratories for exploring new synthetic pathways and developing novel compounds. It facilitates the study of organometallic reactions and functional group interconversions.
| Molecular weight | 211.10 |
|---|---|
| Linear formula | BrC6H4CH2CH2CH=CH2 |
| Assay | 95% |
| Boiling point | 236-237 °C(lit.) |
| Density | 1.270 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5470(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| 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 4-(2-bromophenyl)-1-butene used for?
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4-(2-bromophenyl)-1-butene is primarily used as an intermediate and building block in organic synthesis for research and development purposes.
What are the CAS number and formula for 4-(2-bromophenyl)-1-butene?
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The CAS number is 71813-50-8 and the molecular formula is BrC6H4CH2CH2CH=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-(2-bromophenyl)-1-butene with an assay of 95%. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
How should 4-(2-bromophenyl)-1-butene be handled safely?
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Handle with appropriate personal protective equipment including eyeshields and gloves. A respirator filter of type N95 (US) or P1 (EN143) is recommended. It is classified under WGK 2 in Germany, indicating it is hazardous to water.
Is 4-(2-bromophenyl)-1-butene a controlled substance?
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The provided data does not indicate that 4-(2-bromophenyl)-1-butene is a controlled substance.
How is 4-(2-bromophenyl)-1-butene packed, shipped, or exported?
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Tech Serve Solutions specialises in the global supply and export of fine chemicals. Specific packing and shipping details are available upon request, adhering to all relevant regulations for international transport.
How can I request a sample or quote for 4-(2-bromophenyl)-1-butene?
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To request a sample or quote, please contact our sales department through the website or by phone, providing your details and the product CAS number 71813-50-8.
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