Widely used in peptide synthesis, this compound enables selective lysine modifications in proteins, particularly for introducing dimethylated lysine residues. Its main application lies in the preparation of histone-derived peptides for epigenetic studies, where post-translational modifications play a critical role in gene regulation. The Fmoc group allows for solid-phase synthesis compatibility, while the dimethylated side chain remains protected and stable during coupling steps. After deprotection and cleavage from the resin, the resulting peptides are used in biochemical assays, antibody development, and chromatin research. The hydrochloride salt form improves solubility and handling during synthesis, making it suitable for automated peptide synthesizers.