4-Fluorophenethyl bromide
4-Fluorophenethyl bromide (CAS: 332-42-3), with the molecular formula FC6H4CH2CH2Br and a molecular weight of 203.05 g/mol, is a fluorinated organic building block. This compound serves as a valuable intermediate in chemical synthesis, particularly for introducing the 4-fluorophenethyl moiety into target molecules. Its utility is primarily found in research and development settings for the creation of novel organic compounds.
- IUPAC
- 1-Fluoro-4-(2-bromoethyl)benzene,4-Fluoro-1-(2-bromoethyl)benzene
- Synonyms
- 1-Fluoro-4-(2-bromoethyl)benzene, 4-Fluoro-1-(2-bromoethyl)benzene

Organic Synthesis Intermediate
4-Fluorophenethyl bromide is employed as a reagent in organic synthesis to construct more complex molecules. It is particularly useful for alkylation reactions where the introduction of a 4-fluorophenethyl group is desired.
Pharmaceutical Research
This compound can be utilised in the early stages of drug discovery and development. The presence of fluorine can modulate pharmacokinetic properties, making it an interesting building block for medicinal chemists exploring new therapeutic agents.
Material Science
Fluorinated organic compounds are sometimes investigated for their unique properties in material science applications. 4-Fluorophenethyl bromide may serve as a precursor in the synthesis of specialized polymers or functional materials.
| Molecular weight | 203.05 |
|---|---|
| Linear formula | FC6H4CH2CH2Br |
| Assay | 97% |
| Boiling point | 100-104 °C/15 mmHg(lit.) |
| Density | 1.4498 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.534(lit.) |

Hazard statements
- H302Harmful if swallowed
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 93 °C / 199.4 °F |
| Transport (UN / ADR) | UN 3082 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-51/53 |
| Safety statements (S) | 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 4-Fluorophenethyl bromide used for?
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4-Fluorophenethyl bromide is used as an intermediate in organic synthesis, particularly in pharmaceutical research and development for creating novel organic compounds, and potentially in material science.
What is the CAS number and formula for 4-Fluorophenethyl bromide?
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The CAS number for 4-Fluorophenethyl bromide is 332-42-3, and its linear formula is FC6H4CH2CH2Br.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Fluorophenethyl bromide with an assay of 97%. This product is intended for research and technical use, and TSS does not represent it as USP, BP, or EP grade.
How should 4-Fluorophenethyl bromide be handled?
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Handling 4-Fluorophenethyl bromide requires appropriate personal protective equipment, including eyeshields, faceshields, gloves, and respiratory protection such as a full-face respirator or a type ABEK respirator filter. It is classified as harmful if swallowed (H302) and is toxic to aquatic life with long-lasting effects (R51/53).
Is 4-Fluorophenethyl bromide packed and shipped by TSS?
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Yes, Tech Serve Solutions, a specialist global supplier and exporter, offers 4-Fluorophenethyl bromide for packing and export.
How can I request a sample or quote for 4-Fluorophenethyl bromide?
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To request a sample or obtain a quote for 4-Fluorophenethyl bromide, please contact our sales department via the website or listed contact details.
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