Azido-PEG1-azide

• CAT Number: R008656
• CAS Number: 24345-74-2
• Molecular Formula: C4H8N6O
• Molecular Weight: 156.15
• Purity: ≥95%
• Synonyms: 1-azido-2-(2-azidoethoxy)ethane
• InChI: InChI=1S/C4H8N6O/c5-9-7-1-3-11-4-2-8-10-6/h1-4H2
• InChIKey: NQEPBRYUGPSVPU-UHFFFAOYSA-N
• SMILES: C(COCCN=[N+]=[N-])N=[N+]=[N-]

Azido-PEG1-azide(CAT: R008656) is a short, bifunctional polyethylene glycol (PEG) linker featuring azide groups on both termini. With a single ethylene glycol unit, it provides minimal spacing while retaining flexibility and hydrophilicity. The dual azide functionalities make it highly suitable for click chemistry, particularly copper-catalyzed or strain-promoted azide–alkyne cycloaddition (CuAAC/SPAAC), enabling efficient conjugation with alkyne-modified molecules. Its compact size allows precise molecular design while maintaining solubility and reducing steric hindrance. Azido-PEG1-azide is widely used in applications such as bioconjugation, probe development, polymer modification, and materials science where short, reactive PEG linkers are needed.