n,1-Ditritylhistidine is a heavily protected histidine derivative designed to block both ring and backbone functionalities. The bulky trityl groups support selective downstream deprotection. Researchers use it to craft peptides requiring strict control over histidine reactivity. Its steric profile enables specialized synthetic workflows.
CAT No: R2166
CAS No:74853-62-6
Synonyms/Alias:74853-62-6;n,1-ditritylhistidine;2-(tritylamino)-3-(1-tritylimidazol-4-yl)propanoic acid;DTXSID60298663;NSC125175;Na,nim-ditrityl-L-histidine;DTXCID90249800;2-[(triphenylmethyl)amino]-3-[1-(triphenylmethyl)imidazol-4-yl]propanoic acid;AKOS024350629;NSC-125175;
n,1-Ditritylhistidine is a synthetic histidine derivative featuring trityl protection on both the alpha-amino group and the imidazole nitrogen. As a specialized amino acid building block, it plays an essential role in peptide chemistry and synthetic organic research. The dual trityl groups impart enhanced stability and selective reactivity, making this compound particularly valuable for applications that demand orthogonal protection strategies. Its unique structure allows for precise manipulation during peptide assembly, facilitating the synthesis of complex sequences and site-specific modifications. Owing to these properties, n,1-Ditritylhistidine is widely recognized as a versatile intermediate in advanced peptide synthesis and related biochemical studies.
Peptide Synthesis: In solid-phase peptide synthesis (SPPS), selective protection of functional groups is critical for controlling reaction pathways and preventing undesired side reactions. n,1-Ditritylhistidine serves as a key protected histidine residue, enabling stepwise elongation of peptide chains without compromising the integrity of the imidazole ring or amino terminus. The trityl groups can be removed under mild acidic conditions, allowing for efficient deprotection while minimizing racemization or side-chain modifications. This makes the compound indispensable for the synthesis of histidine-containing peptides, especially those requiring high sequence fidelity and structural precision.
Orthogonal Protection Strategies: The dual trityl protection afforded by n,1-Ditritylhistidine is highly valued in strategies that require orthogonal deprotection. Researchers can selectively remove one trityl group while retaining the other, enabling sequential functionalization or conjugation at specific positions of the histidine residue. This property is particularly advantageous in the design of branched peptides, cyclic peptides, or peptide conjugates where spatial control over reactive sites is essential. The compound's utility in orthogonal protection schemes expands the range of chemical transformations accessible during peptide and protein engineering.
Site-Specific Labeling and Modification: For studies requiring the introduction of probes, labels, or other functional groups at defined histidine positions, n,1-Ditritylhistidine provides a reliable platform for site-specific modification. The ability to protect and deprotect the imidazole nitrogen independently from the alpha-amino group allows for targeted derivatization without cross-reactivity. This is especially useful in the synthesis of peptides for structural biology, fluorescence studies, or affinity tagging, where precise placement of functional groups is critical for downstream analysis.
Combinatorial Library Construction: The compound's robust protection profile makes it suitable for use in combinatorial peptide library synthesis, where diverse histidine-containing sequences are generated for screening and discovery. Its stability under various synthetic conditions ensures compatibility with automated synthesis protocols and high-throughput workflows. By incorporating n,1-Ditritylhistidine as a building block, researchers can expand the chemical diversity of their libraries while maintaining control over sequence integrity and functional group availability.
Analytical Method Development: Beyond its role in synthesis, n,1-Ditritylhistidine can be utilized as a reference standard or control in analytical method development for peptide analysis. Its defined structure and protection pattern provide a benchmark for optimizing chromatographic separation, mass spectrometric detection, or deprotection protocols. Employing this compound in analytical workflows supports the validation of methods for purity assessment, reaction monitoring, and quality control in peptide production environments.
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