Amino-PEG9-amine

• CAT Number: I014118
• CAS Number: 474082-35-4
• Molecular Formula: C20H44N2O9
• Molecular Weight: 456.57
• Purity: ≥95%
• Synonyms: 2-[2-[2-[2-[2-[2-[2-[2-[2-(2-aminoethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanamine
• InChI: InChI=1S/C20H44N2O9/c21-1-3-23-5-7-25-9-11-27-13-15-29-17-19-31-20-18-30-16-14-28-12-10-26-8-6-24-4-2-22/h1-22H2
• InChIKey: YWYRXJJAEDMZGY-UHFFFAOYSA-N
• SMILES: C(COCCOCCOCCOCCOCCOCCOCCOCCOCCN)N

Amino-PEG9-amine（Cat No.:I014118）is a symmetric polyethylene glycol spacer terminated with two primary amines, providing a versatile diamine crosslinker. The PEG9 chain supplies hydrophilicity, flexibility, and controlled nanoscale spacing, minimizing steric effects and nonspecific adsorption. Each amine couples efficiently to NHS esters and activated carboxyls (EDC/NHS), or reacts with aldehydes (Schiff base/reductive amination), isocyanates, and epoxides to form stable amide, secondary amine, or urea linkages. Ideal for protein/peptide conjugation, hydrogel and polymer network formation, nanoparticle and surface functionalization, and assembling heterobifunctional constructs via sequential, orthogonal chemistry under mild, aqueous conditions and buffers.