Bis-PEG23-endo-BCN

• CAT Number: I045940
• CAS Number: 2152700-22-4
• Molecular Formula: C70H124N2O27
• Molecular Weight: 1425.73
• Purity: ≥95%
• Synonyms: 9-bicyclo[6.1.0]non-4-ynylmethyl N-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(9-bicyclo[6.1.0]non-4-ynylmethoxycarbonylamino)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]carbamate
• InChI: InChI=1S/C70H124N2O27/c73-69(98-61-67-63-9-5-1-2-6-10-64(63)67)71-13-15-75-17-19-77-21-23-79-25-27-81-29-31-83-33-35-85-37-39-87-41-43-89-45-47-91-49-51-93-53-55-95-57-59-97-60-58-96-56-54-94-52-50-92-48-46-90-44-42-88-40-38-86-36-34-84-32-30-82-28-26-80-24-22-78-20-18-76-16-14-72-70(74)99-62-68-65-11-7-3-4-8-12-66(65)68/h63-68H,5-62H2,(H,71,73)(H,72,74)
• InChIKey: HHOAGYKDGFYVNA-UHFFFAOYSA-N
• SMILES: C1CC2C(C2COC(=O)NCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCNC(=O)OCC3C4C3CCC#CCC4)CCC#C1

Bis-PEG23-endo-BCN（Cat No.:I045940）is a long, hydrophilic bifunctional linker designed for bioorthogonal conjugation and advanced bioconjugate construction. It features two endo-BCN (bicyclononyne) groups that enable strain-promoted azide–alkyne cycloaddition (SPAAC), allowing copper-free click chemistry under mild, biocompatible conditions. The extended PEG23 spacers impart excellent aqueous solubility, high flexibility, and minimized steric hindrance, making it suitable for use in complex biological systems. This reagent is particularly valuable for labeling, drug delivery, imaging probes, and the preparation of multifunctional biomolecule or polymer conjugates, ensuring efficient, selective, and copper-free bioconjugation performance.