Boc-L-Methionine is widely used in peptide synthesis as a protecting group for the amino group of methionine. It ensures selective reactions during the formation of peptide bonds, preventing unwanted side reactions. This compound is particularly valuable in solid-phase peptide synthesis (SPPS), where it helps in the stepwise assembly of peptides. Additionally, it is employed in the preparation of modified peptides and bioactive molecules, where the Boc group can be easily removed under mild acidic conditions without affecting other functional groups. Its stability and compatibility with various chemical reactions make it a preferred choice in organic and medicinal chemistry research.