Widely used in peptide synthesis, this compound serves as a protected amino acid derivative, enabling selective coupling reactions. Its fluorenylmethyloxycarbonyl (Fmoc) group provides reversible protection for the amine functionality, allowing stepwise assembly of peptides under mild basic conditions. The rigid octahydroindole scaffold contributes to enhanced stereocontrol during coupling, making it valuable in the synthesis of structurally complex peptides and peptidomimetics. It is particularly useful in solid-phase peptide synthesis (SPPS), where it ensures high yields and minimal racemization. Additionally, its compatibility with a broad range of side-chain protecting groups supports the synthesis of diverse bioactive peptides for pharmaceutical research.