N-Boc-L-2-Indanylglycine is a protected non-proteinogenic amino acid derivative. Its structure features an L-configuration α-amino acid core where the side chain is a 2-indanyl group (a fused benzene and cyclopentane ring system), and the α-amino group is protected by a tert-butoxycarbonyl (Boc) group. This combination makes it a chiral building block with a rigid, hydrophobic aromatic character. This compound is primarily employed as a key intermediate in the solid-phase and solution-phase synthesis of peptides and peptidomimetics. The Boc protecting group is acid-labile, allowing for orthogonal deprotection strategies common in peptide chemistry. The incorporation of the 2-indanylglycine residue is strategically used to introduce conformational constraints, enhance metabolic stability, and modulate the hydrophobicity and receptor binding profiles of therapeutic peptides. It finds significant application in medicinal chemistry research for developing peptide-based drugs targeting various diseases. As a specialty amino acid derivative, it is not a commodity chemical but a high-value research reagent. Its synthesis and handling require standard practices for moisture-sensitive and chiral compounds.