1-Fmoc-(S)-azetidine-2-carboxylic acid
1-Fmoc-(S)-azetidine-2-carboxylic acid (CAS: 136552-06-2, Formula: C19H17NO4, MW: 323.34) is a protected unnatural amino acid derivative. It is widely utilised as a building block in peptide synthesis and in chemical biology research. This compound is essential for incorporating modified amino acid residues into peptide chains, enabling the study of protein structure-function relationships and the development of novel peptidomimetics.
- IUPAC
- 1-Fmoc-L-azetidine-2-carboxylic acid

Peptide Synthesis
Serves as a crucial building block for introducing azetidine-2-carboxylic acid into peptide sequences, facilitating the creation of novel peptides with modified structures and properties.
Chemical Biology
Utilised in research to probe biological systems and develop peptidomimetics, aiding in the study of protein interactions and drug discovery.
Organic Synthesis
A versatile intermediate for the synthesis of complex organic molecules and pharmaceutical compounds where azetidine moieties are required.
Drug Discovery
Incorporated into potential drug candidates to modify pharmacokinetic properties or enhance target binding affinity.
| Molecular weight | 323.34 |
|---|---|
| Empirical formula | C19H17NO4 |
| Assay | ≥97.0% |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 1-Fmoc-(S)-azetidine-2-carboxylic acid used for?
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1-Fmoc-(S)-azetidine-2-carboxylic acid is primarily used as a building block in peptide synthesis and in chemical biology research for creating modified peptides and peptidomimetics.
What are the CAS number and formula for 1-Fmoc-(S)-azetidine-2-carboxylic acid?
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The CAS number is 136552-06-2 and the empirical formula is C19H17NO4.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Fmoc-(S)-azetidine-2-carboxylic acid with an assay of ≥97.0%. This product is supplied for research and laboratory use; it is not represented as USP, BP, EP, or pharmacopoeia grade.
How should 1-Fmoc-(S)-azetidine-2-carboxylic acid be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask (type N95 recommended), eyeshields, and gloves. Avoid breathing dust. Ensure adequate ventilation. This compound is classified as an irritant to skin, eyes, and the respiratory tract (H315, H319, H335).
Is 1-Fmoc-(S)-azetidine-2-carboxylic acid available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 1-Fmoc-(S)-azetidine-2-carboxylic acid.
How can I request a sample or quote for 1-Fmoc-(S)-azetidine-2-carboxylic acid?
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Please contact our sales team via the website or email to request a sample or obtain a quotation for 1-Fmoc-(S)-azetidine-2-carboxylic acid.
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