Nepsilon-Acetyl-L-lysine Hydrochloride is widely used in biochemical research as a modified amino acid to study protein structure and function. It serves as a key component in the synthesis of peptides and proteins, particularly in investigations involving post-translational modifications such as acetylation. This compound is also utilized in the development of enzyme inhibitors and as a substrate in enzymatic assays to understand lysine acetylation processes. Additionally, it finds applications in the production of nutritional supplements and pharmaceuticals aimed at supporting metabolic health and cellular repair. Its role in mimicking acetylated lysine residues makes it valuable in studying epigenetic mechanisms and gene regulation.