N-(Azido-PEG2)-N-Boc-PEG4-acid

• CAT Number: I015935
• CAS Number: 2093153-82-1
• Molecular Formula: C22H42N4O10
• Molecular Weight: 522.59
• Purity: ≥95%
• Synonyms: 3-[2-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]propanoic acid
• InChI: InChI=1S/C22H42N4O10/c1-22(2,3)36-21(29)26(6-10-32-14-13-31-9-5-24-25-23)7-11-33-15-17-35-19-18-34-16-12-30-8-4-20(27)28/h4-19H2,1-3H3,(H,27,28)
• InChIKey: BHUIQDKNHMQIER-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)N(CCOCCOCCN=[N+]=[N-])CCOCCOCCOCCOCCC(=O)O

N-(Azido-PEG2)-N-Boc-PEG4-acid（Cat No.:I015935）is a multifunctional PEG derivative featuring an azide group on a PEG₂ spacer, a Boc-protected amine, and a terminal carboxylic acid on a PEG₄ chain. The azide moiety enables efficient bioorthogonal conjugation through copper-catalyzed or strain-promoted click chemistry, while the Boc-protected amine can be deprotected to yield a reactive primary amine for further coupling. The terminal carboxyl group allows versatile linkage with amines or hydroxyls. The PEG linkers provide solubility, flexibility, and biocompatibility, making this reagent valuable for bioconjugation, crosslinking, and drug delivery research.