D-Homophenylalanine ethyl ester hydrochloride
D-Homophenylalanine ethyl ester hydrochloride (CAS: 90940-54-8) is a synthetic amino acid derivative with the molecular formula C12H17NO2 · HCl and a molecular weight of 243.73 g/mol. This compound serves as a valuable building block in chemical synthesis, particularly within peptide chemistry and the development of unnatural amino acids. Its optical activity, indicated by [α]/D -38.0±2.0°, is significant for stereospecific applications. Primarily utilized in research and development settings, it is essential for advancing chemical biology and pharmaceutical research.
- IUPAC
- (−)-Ethyl (R)-2-Amino-4-phenylbutyrate hydrochloride

Peptide Synthesis
D-Homophenylalanine ethyl ester hydrochloride is employed as a non-natural amino acid precursor in the synthesis of modified peptides. It allows for the introduction of unique structural motifs that can alter a peptide's stability, activity, or pharmacokinetic properties.
Chemical Biology Research
This compound is utilized in chemical biology to probe biological systems or to create novel biomolecules. Its incorporation into peptides or other biologically active molecules can help in understanding protein-ligand interactions or developing new therapeutic agents.
Drug Discovery and Development
As an unnatural amino acid derivative, it serves as a key intermediate in the synthesis of potential pharmaceutical candidates. Researchers use it to explore structure-activity relationships and to design novel drug molecules with improved efficacy or reduced side effects.
Organic Synthesis
This ester hydrochloride is a versatile reagent in general organic synthesis, offering a chiral building block for constructing complex molecules. Its functional groups allow for various chemical transformations, contributing to the synthesis of diverse organic compounds.
| Molecular weight | 243.73 |
|---|---|
| Empirical formula | C12H17NO2 · HCl |
| Assay | ≥98.0% (HPLC) |
| Optical activity | [α]/D -38.0±2.0°, c = 1 in H2O |
| 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 D-Homophenylalanine ethyl ester hydrochloride used for?
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D-Homophenylalanine ethyl ester hydrochloride is primarily used as a building block in chemical synthesis, particularly in peptide chemistry and chemical biology research for creating unnatural amino acid derivatives and novel biomolecules.
What is the CAS number and chemical formula?
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The CAS number for D-Homophenylalanine ethyl ester hydrochloride is 90940-54-8, and its chemical formula is C12H17NO2 · HCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies D-Homophenylalanine ethyl ester hydrochloride with an assay of ≥98.0% (HPLC). We do not represent this product as USP, BP, EP, or pharmacopoeia grade.
What are the safety and handling precautions for this chemical?
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Appropriate personal protective equipment, including eyeshields and gloves, should be worn. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Handle in a well-ventilated area. Consult the Safety Data Sheet for comprehensive information.
Is this chemical exported by Tech Serve Solutions?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including D-Homophenylalanine ethyl ester hydrochloride.
How can I request a sample or quote?
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To request a sample or quote for D-Homophenylalanine ethyl ester hydrochloride, please visit the Tech Serve Solutions website or contact our sales department directly.
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