D-β-Phenylalanine
D-β-Phenylalanine (CAS: 13921-90-9), with the molecular formula C9H11NO2 and a molecular weight of 165.19 g/mol, is an unnatural beta-amino acid derivative. It serves as a valuable building block in chemical synthesis and peptide chemistry. Its unique structure makes it a key component in research within chemical biology and for the development of novel peptides and compounds.
- IUPAC
- (R)-3-Amino-3-phenylpropionic acid

Peptide Synthesis
D-β-Phenylalanine can be incorporated into peptide sequences to create unnatural peptides with modified properties or enhanced stability. These modified peptides are useful in biochemical research and drug discovery.
Chemical Biology Research
As a non-proteinogenic amino acid, it is employed in chemical biology to probe biological systems or to design novel biomolecules. Its inclusion can alter protein folding or interaction studies.
Organic Synthesis Intermediate
This compound serves as an intermediate in the synthesis of complex organic molecules. Its beta-amino acid structure offers specific stereochemical pathways for various synthetic routes.
| Molecular weight | 165.19 |
|---|---|
| Empirical formula | C9H11NO2 |
| 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-β-Phenylalanine used for?
+
D-β-Phenylalanine is used in peptide synthesis, chemical biology research, and as an intermediate in organic synthesis, particularly for creating unnatural peptides and compounds.
What are the CAS number and formula for D-β-Phenylalanine?
+
The CAS number is 13921-90-9 and the molecular formula is C9H11NO2.
What grade and purity does Tech Serve Solutions supply for D-β-Phenylalanine?
+
Tech Serve Solutions supplies D-β-Phenylalanine as a research chemical. The specific assay and purity are available on the Certificate of Analysis. We do not represent this product as USP, BP, or EP grade.
How should D-β-Phenylalanine be handled safely?
+
Handle D-β-Phenylalanine with appropriate personal protective equipment, including eyeshields and gloves. A respirator filter such as type N95 (US) or type P1 (EN143) may be necessary. Refer to the Safety Data Sheet for full handling instructions.
Is D-β-Phenylalanine a controlled substance?
+
The provided data does not indicate that D-β-Phenylalanine (CAS: 13921-90-9) is a controlled substance.
How is D-β-Phenylalanine packed and shipped?
+
D-β-Phenylalanine is carefully packed for safe transit and exported globally by Tech Serve Solutions, adhering to all relevant shipping regulations for chemicals.
How can I request a sample or quote for D-β-Phenylalanine?
+
To request a sample or a quote for D-β-Phenylalanine, please contact our sales department through the TSS website or by phone.
▶ 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