NH-bis(PEG4-Boc)

• CAT Number: I014523
• CAS Number: 2055041-41-1
• Molecular Formula: C30H59NO12
• Molecular Weight: 625.79
• Purity: ≥95%
• Synonyms: tert-butyl 3-[2-[2-[2-[2-[2-[2-[2-[2-[3-[(2-methylpropan-2-yl)oxy]-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethylamino]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C30H59NO12/c1-29(2,3)42-27(32)7-11-34-15-19-38-23-25-40-21-17-36-13-9-31-10-14-37-18-22-41-26-24-39-20-16-35-12-8-28(33)43-30(4,5)6/h31H,7-26H2,1-6H3
• InChIKey: ZNEKZIKFKNVSRU-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)CCOCCOCCOCCOCCNCCOCCOCCOCCOCCC(=O)OC(C)(C)C

NH-bis(PEG4-Boc)（Cat No.:I014523）is a bifunctional PEG-based linker built around a central amine connected to two PEG4 arms, each terminating in a Boc-protected amine. The Boc groups provide temporary protection and can be selectively removed under mild acidic conditions to generate free primary amines for conjugation with carboxylic acids, activated esters, or isocyanates. The PEG4 chains enhance aqueous solubility, impart flexibility, and reduce steric hindrance, supporting efficient coupling reactions. This reagent is valuable for multivalent biomolecule assembly, polymer modification, drug conjugates, and chemical biology applications requiring orthogonal amine functionalities.