Used in peptide synthesis as a protected intermediate, particularly in solid-phase peptide synthesis (SPPS). The Boc (tert-butyloxycarbonyl) group acts as an amine-protecting group, while TIS refers to the triisopropylsilyl group, which protects another functional group (e.g., hydroxyl or carboxyl). This compound enables orthogonal protection strategies, allowing selective deprotection and incorporation into complex peptide sequences. It is essential for producing high-purity peptides with minimal side reactions, widely used in pharmaceutical research and development of bioactive peptides.