(S)-Boc-3-methyl-β-Phe-OH
(S)-Boc-3-methyl-β-Phe-OH, CAS 499995-75-4, is a protected beta-amino acid derivative with the molecular formula C15H21NO4 and a molecular weight of 279.33. This unnatural amino acid is valuable in chemical synthesis and peptide chemistry. Its structure makes it suitable for incorporation into peptides to modify their properties, offering potential applications in drug discovery and chemical biology research.
- IUPAC
- (S)-3-(Boc-amino)-3-(3-methylphenyl)propionic acid,Boc-3-methyl-D-β-phenylalanine

Peptide Synthesis
Utilised as a building block in the synthesis of modified peptides. Its unnatural beta-amino acid structure can introduce unique conformational constraints or functionalities not found in natural peptides.
Chemical Biology Research
Serves as a tool for probing biological systems. Its incorporation into peptidomimetics can aid in studying protein-protein interactions or developing novel biochemical probes.
Drug Discovery
Employed in the development of new therapeutic agents. The unique properties of beta-amino acids can contribute to enhanced stability, bioavailability, or receptor binding in drug candidates.
Organic Synthesis
Acts as a chiral intermediate in complex organic synthesis pathways. It is useful for constructing molecules with specific stereochemistry and structural features.
| Molecular weight | 279.33 |
|---|---|
| Empirical formula | C15H21NO4 |
| Assay | ≥98.0% (HPLC) |
| 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 (S)-Boc-3-methyl-β-Phe-OH used for?
+
(S)-Boc-3-methyl-β-Phe-OH is primarily used in peptide synthesis, chemical biology research, drug discovery, and organic synthesis as a building block for unnatural peptides and complex molecules.
What are the CAS number and formula for (S)-Boc-3-methyl-β-Phe-OH?
+
The CAS number is 499995-75-4, and the empirical formula is C15H21NO4.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies (S)-Boc-3-methyl-β-Phe-OH with an assay of ≥98.0% (HPLC). We do not represent this product as USP, BP, or EP grade.
How should (S)-Boc-3-methyl-β-Phe-OH be handled?
+
Handle with appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. Consult the Safety Data Sheet for full handling instructions.
Is this chemical shipped internationally?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including (S)-Boc-3-methyl-β-Phe-OH.
How can I request a sample or quote?
+
Please contact our sales team directly via phone or email to request a sample or a quotation for (S)-Boc-3-methyl-β-Phe-OH.
What is the Water Hazard Class (WGK) for this compound in Germany?
+
The WGK Germany for (S)-Boc-3-methyl-β-Phe-OH is 3.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis