N-(Amino-PEG5)-N-bis(PEG4-acid)

• CAT Number: I014500
• CAS Number: 2093152-86-2
• Molecular Formula: C34H68N2O17
• Molecular Weight: 776.91
• Purity: ≥95%
• Synonyms: 3-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethyl-[2-[2-[2-[2-(2-carboxyethoxy)ethoxy]ethoxy]ethoxy]ethyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
• InChI: InChI=1S/C34H68N2O17/c35-3-9-43-15-21-49-27-31-53-32-30-52-24-18-46-12-6-36(4-10-44-16-22-50-28-25-47-19-13-41-7-1-33(37)38)5-11-45-17-23-51-29-26-48-20-14-42-8-2-34(39)40/h1-32,35H2,(H,37,38)(H,39,40)
• InChIKey: LSCUTCGBTWNNAV-UHFFFAOYSA-N
• SMILES: C(COCCOCCOCCOCCN(CCOCCOCCOCCOCCC(=O)O)CCOCCOCCOCCOCCOCCN)C(=O)O

N-(Amino-PEG5)-N-bis(PEG4-acid)(CAT: I014500) is a trifunctional polyethylene glycol (PEG) linker designed for advanced bioconjugation and molecular engineering. It features a central amino group connected to a PEG5 spacer, along with two PEG4 arms terminating in carboxylic acids. The amine functionality enables coupling to activated esters, isothiocyanates, or aldehydes, while the terminal carboxyl groups allow further modification via amide bond formation. The PEG architecture provides excellent solubility, flexibility, and reduced steric hindrance, supporting stable and efficient conjugation. This versatile reagent is particularly valuable in drug delivery, multivalent ligand design, protein modification, and the synthesis of multifunctional biomolecular assemblies.