Used in bioconjugation chemistry as a protected cysteamine derivative for introducing amine-reactive disulfide linkers in drug delivery systems. Commonly applied in the synthesis of antibody-drug conjugates (ADCs) and targeted therapeutics where controlled release via disulfide cleavage is desired. Its Boc-protected amine allows for selective deprotection and further functionalization, making it valuable in multi-step organic synthesis and peptide modifications. Also utilized in immobilizing biomolecules on surfaces such as gold nanoparticles or biosensors through disulfide-thiol interactions.