m-PEG2-azide

• CAT Number: I016965
• CAS Number: 215181-61-6
• Molecular Formula: C5H11N3O2
• Molecular Weight: 145.16
• Purity: ≥95%
• Synonyms: 1-azido-2-(2-methoxyethoxy)ethane
• InChI: InChI=1S/C5H11N3O2/c1-9-4-5-10-3-2-7-8-6/h2-5H2,1H3
• InChIKey: OXDZFVNIVMSPEG-UHFFFAOYSA-N
• SMILES: COCCOCCN=[N+]=[N-]

m-PEG2-azide(CAT: I016965) is a monofunctional polyethylene glycol (PEG) derivative featuring a terminal azide group attached to a short two-unit PEG spacer. The azide moiety enables efficient copper-catalyzed or strain-promoted azide–alkyne cycloaddition (“click chemistry”), forming stable triazole linkages with alkyne-functionalized molecules. The PEG2 backbone enhances solubility, flexibility, and biocompatibility while minimizing steric hindrance, making it well suited for conjugation in both aqueous and organic systems. m-PEG2-azide is widely used in bioconjugation, drug delivery, PEGylation, surface modification, and nanotechnology, providing a versatile tool for constructing multifunctional biomolecules, chemical probes, and advanced materials requiring hydrophilicity and reliable click chemistry reactivity.