N-(Azido-PEG2)-N-Boc-PEG3-Boc

• CAT Number: I015902
• CAS Number: 2093153-07-0
• Molecular Formula: C24H46N4O9
• Molecular Weight: 534.64
• Purity: ≥95%
• Synonyms: tert-butyl 3-[2-[2-[2-[2-[2-(2-azidoethoxy)ethoxy]ethyl-[(2-methylpropan-2-yl)oxycarbonyl]amino]ethoxy]ethoxy]ethoxy]propanoate
• InChI: InChI=1S/C24H46N4O9/c1-23(2,3)36-21(29)7-11-31-15-19-35-20-18-34-14-10-28(22(30)37-24(4,5)6)9-13-33-17-16-32-12-8-26-27-25/h7-20H2,1-6H3
• InChIKey: YULNOPFYPKAAPI-UHFFFAOYSA-N
• SMILES: CC(C)(C)OC(=O)CCOCCOCCOCCN(CCOCCOCCN=[N+]=[N-])C(=O)OC(C)(C)C

N-(Azido-PEG2)-N-Boc-PEG3-Boc（Cat No.:I015902）is a multifunctional PEG derivative incorporating an azide group on a PEG₂ spacer and two Boc-protected amines connected through a PEG₃ chain. The azide moiety enables selective bioorthogonal conjugation via click chemistry, including copper-catalyzed or strain-promoted cycloadditions, providing stable linkages under mild conditions. The Boc-protected amines can be deprotected to generate reactive primary amines for further coupling with carboxyl, NHS ester, or aldehyde groups. The PEG spacers enhance solubility, biocompatibility, and molecular flexibility, making this reagent valuable for bioconjugation, crosslinking, nanomaterial functionalization, and drug delivery applications.