Boc-N-Me-Tyr(Me)-OH · DCHA

Boc-N-Me-Tyr(Me)-OH · DCHA is a Boc-protected, N-methylated tyrosine derivative bearing an additional methyl substituent on the phenolic side-chain (tyrosine phenol methylated) and supplied as a dicyclohexylamine (DCHA) salt. This protected amino acid building block is designed for peptide and peptidomimetic synthesis where controlled amide formation, reduced hydrogen-bonding at the nitrogen, and phenolic protection/attenuation are important for downstream coupling efficiency and final scaffold stability. The combination of a Boc N-terminus with the N-methylated backbone and the substituted aromatic side-chain makes it a practical choice for constructing sterically and electronically tuned peptide segments.

1. Peptide Segment Coupling

Boc-N-Me-Tyr(Me)-OH · DCHA is used as a protected amino acid building block for assembling peptide segments in solution-phase peptide synthesis and custom peptide manufacturing workflows. Researchers select the Boc-protected, N-methylated format to control the N-terminus during segment condensation and to introduce an N-methyl amide motif that can modulate conformational preferences and backbone hydrogen-bonding patterns in the growing chain. The methylated aromatic side-chain supports the preparation of peptidomimetic analogs where the phenolic functionality is intentionally masked or tuned to avoid side reactions during coupling and deprotection steps.

2. Peptidomimetic SAR Development

Boc-N-Me-Tyr(Me)-OH · DCHA is frequently incorporated into peptidomimetic libraries for structure-activity relationship (SAR) studies where aromatic side-chain electronics and amide backbone substitution are key variables. Medicinal chemistry groups use this building block to generate analog series that probe how N-methylation and a substituted tyrosine-derived aromatic residue influence properties such as conformational behavior and chemical robustness during iterative synthesis. The protected, salt-form reagent format supports consistent handling in parallel synthesis and helps maintain reproducible coupling performance when preparing multiple closely related analogs.

3. Solid-Phase Compatible Building Block

Boc-N-Me-Tyr(Me)-OH · DCHA is applied in peptide synthesis workflows that require a preconfigured amino acid residue with a stable protecting-group pattern for stepwise chain assembly. Peptide chemists use the Boc-protected derivative to introduce an N-methylated tyrosine-like residue into sequence-defined constructs while keeping the aromatic side-chain in a protected/tuned state throughout the assembly process. This makes the reagent useful for preparing modified peptides where the target sequence benefits from reduced side-chain reactivity and a backbone that includes N-methyl amide linkages.

4. Analytical Reference Peptide Synthesis

Boc-N-Me-Tyr(Me)-OH · DCHA supports the preparation of defined peptide standards used in method development and analytical characterization. Analytical chemistry and chemical biology teams rely on residue-precise synthesis to generate reference materials for LC-MS method qualification, fragmentation behavior assessment, and comparative studies across analog series. By enabling consistent incorporation of the N-methylated, methyl-substituted tyrosine residue into a known sequence, the building block helps ensure that reference peptides match the exact structural features required for reliable analytical comparisons.

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