N-(Amino-PEG3)-N-bis(PEG4-Boc)

• CAT Number: I016071
• CAS Number: 2353409-57-9
• Molecular Formula: C38H76N2O15
• Molecular Weight: 801.01
• Purity: ≥95%
• Synonyms: tert-butyl 3-[2-[2-[2-[2-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethyl-[2-[2-[2-[2-[3-[(2-methylpropan-2-yl)oxy]-3-oxopropoxy]ethoxy]ethoxy]ethoxy]ethyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C38H76N2O15/c1-37(2,3)54-35(41)7-13-43-19-25-49-31-33-52-29-23-47-17-11-40(10-16-46-22-28-51-27-21-45-15-9-39)12-18-48-24-30-53-34-32-50-26-20-44-14-8-36(42)55-38(4,5)6/h7-34,39H2,1-6H3
• InChIKey: FGSQMHHAFQWJGV-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)CCOCCOCCOCCOCCN(CCOCCOCCOCCN)CCOCCOCCOCCOCCC(=O)OC(C)(C)C

N-(Amino-PEG3)-N-bis(PEG4-Boc)（Cat No.:I016071）is a multifunctional PEG-based linker designed with a central amino-PEG3 unit connected to two PEG4 arms, each capped by a Boc-protected amine. The free amino group provides an active site for direct conjugation with carboxylic acids, activated esters, or isocyanates, while the Boc-protected amines can be deprotected under mild acidic conditions to generate additional reactive handles. The PEG spacers enhance hydrophilicity, flexibility, and reduce steric hindrance, enabling efficient coupling. This reagent is ideal for multivalent conjugation, drug delivery systems, biomaterials engineering, and advanced chemical biology applications.