PEG-bis-amine (MW 20000)

• CAT Number: I045925
• CAS Number: 24991-53-5
• Molecular Formula: (C2H4O)nC4H12N2O
• Molecular Weight: 20000(Average)
• Purity: ≥95%

PEG-bis-Amine (MW 20000)（Cat No.:I045925）is a linear polyethylene glycol derivative with a molecular weight of 20,000 Da, featuring primary amine groups at both termini. These reactive amines readily couple with carboxyl, NHS esters, and other activated groups, enabling versatile bioconjugation and crosslinking applications. The long PEG chain provides exceptional hydrophilicity, flexibility, and extended circulation half-life, while minimizing immunogenicity and nonspecific interactions. This high-molecular-weight derivative is particularly useful for surface modification, hydrogel formation, nanoparticle functionalization, and drug delivery systems requiring long, biocompatible PEG spacers for stable and efficient linkage.