This chemical is a protected dipeptide derivative primarily used in peptide synthesis, particularly in solid-phase peptide synthesis (SPPS) methods. It consists of L-isoleucine linked to L-threonine, where the fluorenylmethoxycarbonyl (Fmoc) group protects the amine functionality of L-isoleucine, and the tert-butoxycarbonyl (Boc) group protects the hydroxyl group of L-threonine. This dual protection allows for selective deprotection during the stepwise assembly of peptides, ensuring precise control over the sequence. It is commonly employed in the production of therapeutic peptides, research peptides, and peptide-based drugs, where high purity and specific sequences are critical. Its use is also prevalent in biochemistry and pharmaceutical research for studying protein interactions and developing novel peptide-based treatments.