Azido-PEG11-amine

• CAT Number: I014140
• CAS Number: 1800414-71-4
• Molecular Formula: C24H50N4O11
• Molecular Weight: 570.67
• Purity: ≥95%
• Synonyms: 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanamine
• InChI: InChI=1S/C24H50N4O11/c25-1-3-29-5-7-31-9-11-33-13-15-35-17-19-37-21-23-39-24-22-38-20-18-36-16-14-34-12-10-32-8-6-30-4-2-27-28-26/h1-25H2
• InChIKey: SEFFQZUNGHPPPA-UHFFFAOYSA-N
• SMILES: C(COCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCN=[N+]=[N-])N

Azido-PEG11-amine（Cat No.:I014140）is a heterobifunctional polyethylene glycol linker bearing a terminal azide and a primary amine separated by an eleven-unit PEG spacer. The azide enables copper-catalyzed or copper-free click reactions with alkynes (CuAAC or SPAAC) for rapid, selective, and bioorthogonal conjugation. The amine couples efficiently with NHS esters, activated carboxyl groups (EDC/NHS), isocyanates, or aldehydes (reductive amination) to form stable linkages. The PEG11 chain enhances aqueous solubility, imparts flexibility, and reduces steric effects, ensuring high coupling efficiency. Ideal for modular bioconjugation, probe assembly, surface modification, and drug-delivery research requiring orthogonal handles.