Z-Asn-OtBu
Z-Asn-OtBu (CAS 25456-85-3), also known as Z-L-asparagine tert-butyl ester, is a derivative of the amino acid asparagine with the empirical formula C16H22N2O5 and a molecular weight of 322.36 g/mol. This compound serves as a valuable building block in chemical synthesis, particularly within peptide chemistry and biochemical research. Its protected form facilitates controlled reactions in the construction of more complex molecules.
- IUPAC
- Z-L-asparagine tert-butyl ester
- Synonyms
- Z-L-asparagine tert-butyl ester

Peptide Synthesis
Z-Asn-OtBu is utilised as a protected amino acid derivative in solid-phase and solution-phase peptide synthesis. The tert-butyl ester protects the carboxyl group, while the Z (benzyloxycarbonyl) group protects the amine, allowing for selective deprotection and coupling.
Chemical Biology Research
This compound can be incorporated into modified peptides or peptidomimetics for studying biological processes. Its specific structure aids in the investigation of protein-protein interactions or enzyme mechanisms.
Organic Synthesis Intermediate
As a functionalised molecule, Z-Asn-OtBu acts as an intermediate in the synthesis of various complex organic compounds, including pharmaceuticals and fine chemicals, where an asparagine moiety is required.
| Molecular weight | 322.36 |
|---|---|
| Empirical formula | C16H22N2O5 |
| Assay | ≥98.0% (TLC) |
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 Z-Asn-OtBu used for?
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Z-Asn-OtBu is primarily used as a protected building block in peptide synthesis and as an intermediate in chemical biology and general organic synthesis.
What is the CAS number and formula for Z-Asn-OtBu?
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The CAS number for Z-Asn-OtBu is 25456-85-3, and its empirical formula is C16H22N2O5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Z-Asn-OtBu with a minimum purity of 98.0% (determined by TLC). TSS does not represent this product as USP, BP, or EP grade.
What are the safety and handling recommendations for Z-Asn-OtBu?
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Z-Asn-OtBu is classified under Water Hazard Class 3 (WGK 3) in Germany, indicating it is hazardous to aquatic life. Appropriate personal protective equipment should be used, and contact with skin, eyes, and clothing should be avoided. Handle in a well-ventilated area.
How is Z-Asn-OtBu packed, shipped, and exported?
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Z-Asn-OtBu is carefully packed according to industry standards to ensure stability during transit. We offer global export services for research and industrial requirements.
How can I request a sample or quote for Z-Asn-OtBu?
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To request a sample or obtain a quotation for Z-Asn-OtBu, please use the contact form on our website or contact our sales department directly.
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