Used in bioconjugation and pharmaceutical development, this compound serves as a PEG-based linker with a protected amine group, enabling controlled attachment of biomolecules such as peptides, proteins, or drugs. The Boc-protected amine allows for selective deprotection under mild acidic conditions, facilitating stepwise synthesis in complex molecule assembly. Its hydrophilic PEG spacers enhance solubility and stability of conjugates, making it valuable in creating antibody-drug conjugates (ADCs), targeted therapies, and diagnostic probes. Commonly applied in solid-phase synthesis and surface functionalization due to its reliable reactivity and compatibility with biological systems.