Mal-PEG2-C2-Boc（Cat No.:I015723）is a heterobifunctional polyethylene glycol linker engineered for precise chemical and biological conjugation. It contains a maleimide group for selective thiol coupling, a short PEG2 spacer that enhances solubility and flexibility, and a Boc-protected amine connected through a C2 linker. The Boc group allows orthogonal protection, enabling controlled deprotection and subsequent functionalization. This balanced structure minimizes steric hindrance while maintaining reactivity in both aqueous and organic systems. Mal-PEG2-C2-Boc is valuable in protein–drug conjugates, peptide modification, and advanced biomaterial surface engineering applications.