Boc-N-methyl-L-alanine is widely used in peptide synthesis as a protecting group for amino acids. The Boc (tert-butyloxycarbonyl) group safeguards the amino functionality during the synthesis process, preventing unwanted side reactions. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps in the stepwise construction of peptides by ensuring selective deprotection and coupling reactions. Additionally, it is employed in the development of peptidomimetics and bioactive peptides, where the N-methyl group enhances metabolic stability and bioavailability. Its application extends to medicinal chemistry for designing peptide-based drugs and exploring structure-activity relationships.