4-Pentylbromobenzene
4-Pentylbromobenzene (CAS: 51554-95-1), with the molecular formula C11H15Br and a molecular weight of 227.14 g/mol, is an organic aryl halide. This compound serves as a valuable building block in organic synthesis, particularly in the preparation of more complex molecules for research and development purposes. Its structure features a bromobenzene core substituted with a five-carbon alkyl chain, making it useful for introducing the pentylphenyl moiety into various chemical structures.
- IUPAC
- 1-Bromo-4-pentylbenzene

Organic Synthesis Intermediate
4-Pentylbromobenzene is primarily utilised as a versatile intermediate in academic and industrial organic synthesis. It facilitates the formation of carbon-carbon bonds and other linkages through reactions like Suzuki or Grignard couplings.
Building Block for Specialty Chemicals
The compound acts as a key building block for the synthesis of advanced materials, liquid crystals, or potentially pharmaceutical precursors. Its structure allows for further functionalisation on either the aromatic ring or through reactions involving the bromine atom.
Research and Development
In R&D settings, 4-Pentylbromobenzene is employed to explore novel chemical pathways and to synthesise new compounds with tailored properties. Its availability supports a wide range of chemical research projects.
| Molecular weight | 227.14 |
|---|---|
| Linear formula | CH3(CH2)4C6H4Br |
| Assay | 97% |
| Boiling point | 203-204 °C(lit.) |
| Density | 1.272 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.5260(lit.) |

Hazard statements
- H319Causes serious eye irritation
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 88 °C / 190.4 °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 4-Pentylbromobenzene used for?
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4-Pentylbromobenzene is used as an intermediate and building block in organic synthesis for research and development purposes, and in the preparation of specialty chemicals.
What are the CAS number and formula for 4-Pentylbromobenzene?
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The CAS number for 4-Pentylbromobenzene is 51554-95-1, and its molecular formula is CH3(CH2)4C6H4Br.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Pentylbromobenzene with a minimum assay of 97%. This product is suitable for research and general chemical synthesis; TSS does not represent it as USP, BP, or EP grade.
How should 4-Pentylbromobenzene be handled?
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4-Pentylbromobenzene is classified as a Warning with hazards including H319 (Causes serious eye irritation) and H413 (May cause long lasting harmful effects to aquatic life). It is recommended to use safety equipment including eyeshields, gloves, and an appropriate respirator. Handle in a well-ventilated area.
Is 4-Pentylbromobenzene a controlled substance?
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Based on the provided data, there is no indication that 4-Pentylbromobenzene is a controlled substance.
How is 4-Pentylbromobenzene packed and shipped?
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4-Pentylbromobenzene is shipped according to transport regulations, including NA 1993 / PGIII. Specific packaging details can be confirmed upon order inquiry.
How can I request a quote or sample for 4-Pentylbromobenzene?
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To request a quote or sample for 4-Pentylbromobenzene, please contact the Tech Serve Solutions sales department via our website or designated contact channels.
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