NH-bis(PEG4-C2-NH-Boc)

• CAT Number: I014522
• CAS Number: 2182601-75-6
• Molecular Formula: C30H61N3O12
• Molecular Weight: 655.82
• Purity: ≥95%
• Synonyms: tert-butyl N-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[(2-methylpropan-2-yl)oxycarbonylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]carbamate
• InChI: InChI=1S/C30H61N3O12/c1-29(2,3)44-27(34)32-9-13-38-17-21-42-25-23-40-19-15-36-11-7-31-8-12-37-16-20-41-24-26-43-22-18-39-14-10-33-28(35)45-30(4,5)6/h31H,7-26H2,1-6H3,(H,32,34)(H,33,35)
• InChIKey: NRRXRYVNQACVQL-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)NCCOCCOCCOCCOCCNCCOCCOCCOCCOCCNC(=O)OC(C)(C)C

NH-bis(PEG4-C2-NH-Boc)（Cat No.:I014522）is a symmetric bifunctional PEG-based linker featuring a central amine core connected to two PEG4-C2 arms, each terminated with a Boc-protected amine. The Boc groups provide temporary protection, which can be removed under mild acidic conditions to reveal reactive primary amines for further conjugation with carboxylic acids, activated esters, or isocyanates. The PEG4-C2 spacers enhance solubility, impart flexibility, and reduce steric hindrance, enabling efficient coupling. This reagent is widely used in drug conjugation, polymer modification, biomaterials engineering, and advanced chemical biology applications requiring multivalent functionalization.