This chemical is primarily used in peptide synthesis, where it serves as a protecting group for the valine amino acid. The Fmoc (fluorenylmethyloxycarbonyl) group is particularly valuable in solid-phase peptide synthesis (SPPS) because it can be easily removed under mild basic conditions, allowing for the stepwise construction of peptides. The FmocHmb (2-hydroxy-4-methoxybenzyl) moiety provides additional protection, particularly against side reactions such as diketopiperazine formation, which is common in peptide synthesis involving valine residues. This dual protection ensures higher yields and purity in the final peptide product, making it a crucial reagent in the production of complex peptides for research and pharmaceutical applications.