Boc-L-Homocitrulline is a protected derivative of the non-proteinogenic amino acid L-homocitrulline. Its chemical structure features a Boc (tert-butoxycarbonyl) protecting group on the amine functionality, making it a crucial building block in solid-phase peptide synthesis (SPPS). The compound is characterized by its extended side chain compared to citrulline, which can influence peptide conformation and biological activity. This amino acid derivative is primarily used in peptide research and pharmaceutical development. It serves as a key intermediate for incorporating homocitrulline residues into synthetic peptides. Such peptides are of significant interest in studying post-translational modifications, particularly citrullination and homocitrullination, which are implicated in autoimmune diseases like rheumatoid arthritis. Researchers utilize Boc-L-Homocitrulline to investigate protein structure-function relationships and develop potential diagnostic tools or therapeutic agents. As a Boc-protected amino acid, it offers stability and selectivity during peptide chain assembly. Its use requires standard peptide coupling reagents and deprotection conditions. Handling should follow general laboratory safety protocols for fine chemicals.