Fmoc-Tyr(Bzl)-OH
Fmoc-Tyr(Bzl)-OH (CAS 71989-40-7) is a protected derivative of L-tyrosine, featuring the Fmoc group for N-terminal protection and a benzyl ether for the phenolic hydroxyl. With a molecular formula of C31H27NO5 and a molecular weight of 493.55 g/mol, this compound is crucial in solid-phase peptide synthesis (SPPS). It is widely employed for the controlled incorporation of tyrosine residues into peptide chains, facilitating the construction of complex peptides for research and development.
- IUPAC
- Fmoc-O-benzyl-L-tyrosine
- Synonyms
- Fmoc-O-benzyl-L-tyrosine

Peptide Synthesis
Used as a building block in solid-phase peptide synthesis (SPPS) to incorporate tyrosine with a protected phenolic hydroxyl group, enabling the formation of complex peptide sequences.
Chemical Biology Research
Facilitates the synthesis of modified peptides for studying protein function, enzyme mechanisms, and drug-target interactions in biological systems.
Organic Synthesis Intermediate
Serves as a valuable intermediate in the synthesis of various organic molecules where a protected tyrosine moiety is required.
| Molecular weight | 493.55 |
|---|---|
| Empirical formula | C31H27NO5 |
| Assay | ≥98.0% (HPLC) |
| Optical activity | [α]20/D −16.0±2.5°, c = 1% in DMF |
| Storage temperature | 2-8°C |
| Melting point | 157-161 °C |
| 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 Fmoc-Tyr(Bzl)-OH used for?
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Fmoc-Tyr(Bzl)-OH is primarily used as a protected amino acid derivative in solid-phase peptide synthesis (SPPS) to incorporate tyrosine residues into peptide chains.
What is the CAS number and formula for Fmoc-Tyr(Bzl)-OH?
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The CAS number is 71989-40-7, and the empirical formula is C31H27NO5.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Fmoc-Tyr(Bzl)-OH with a purity of ≥98.0% (HPLC). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.
What are the safety and handling recommendations for Fmoc-Tyr(Bzl)-OH?
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Handle Fmoc-Tyr(Bzl)-OH with appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. The compound has a WGK Germany rating of 3.
How is Fmoc-Tyr(Bzl)-OH packed, shipped, and exported?
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Fmoc-Tyr(Bzl)-OH is typically stored at 2-8°C. Tech Serve Solutions can expertly pack, ship, and export this chemical globally to meet your research and manufacturing needs.
How can I request a quote or sample for Fmoc-Tyr(Bzl)-OH?
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Please contact our customer service team through our website or by phone to request a quote or sample for Fmoc-Tyr(Bzl)-OH.
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