4-Bromo-L-phenylalanine
4-Bromo-L-phenylalanine (CAS 24250-84-8) is a synthetic unnatural amino acid derivative with the empirical formula C9H10BrNO2 and a molecular weight of 244.09 g/mol. It is primarily utilised as a building block in chemical synthesis and peptide chemistry. This compound serves as a valuable tool in chemical biology for introducing specific modifications and studying biochemical processes, aiding in the development of novel compounds and research methodologies.

Chemical Synthesis
Utilised as a chiral building block for the synthesis of complex organic molecules and pharmaceutical intermediates. Its bromo-phenylalanine structure allows for versatile chemical transformations.
Peptide Chemistry
Incorporated into peptide sequences to create modified peptides with altered biological activity or stability. It is a useful component in the study of peptide structure-function relationships.
Chemical Biology
Employed as a tool for probing biological systems, enabling the study of protein structure, function, and interactions. It can be used to introduce specific functionalities into biomolecules.
Biochemical Research
Serves as a reagent in research laboratories for the development of new chemical entities and the investigation of biological pathways. Its unique structure makes it valuable for various research applications.
| Molecular weight | 244.09 |
|---|---|
| Empirical formula | C9H10BrNO2 |
| Assay | ≥98.0% (NT) |
| Optical activity | [α]20/D −22.0±2°, c = 0.5% in H2O |
| Melting point | ~265 °C (dec.) |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P301IF SWALLOWED
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 25 |
| Safety statements (S) | 45 |
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-Bromo-L-phenylalanine used for?
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4-Bromo-L-phenylalanine is used in chemical synthesis, peptide chemistry, and chemical biology research. It serves as a building block for creating modified peptides and complex organic molecules, and as a tool for investigating biological systems.
What is the CAS number and formula for 4-Bromo-L-phenylalanine?
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The CAS number is 24250-84-8, and the empirical formula is C9H10BrNO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Bromo-L-phenylalanine with an assay of ≥98.0%. This product is intended for research and laboratory use and is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 4-Bromo-L-phenylalanine be handled?
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4-Bromo-L-phenylalanine is classified as acutely toxic if swallowed (H301) and requires careful handling. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and a P2 respirator, must be used. Refer to the safety data sheet for detailed handling procedures.
Is 4-Bromo-L-phenylalanine packed and exported by TSS?
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Yes, Tech Serve Solutions can pack and export 4-Bromo-L-phenylalanine to researchers and institutions globally.
How can I request a sample or quote for 4-Bromo-L-phenylalanine?
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To request a sample or quote, please contact our sales team via the website or direct inquiry, providing your details and the quantity required.
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