Biotin-PEG2-CH2CH2N3

• CAT Number: I016193
• CAS Number: 945633-30-7
• Molecular Formula: C16H28N6O4S
• Molecular Weight: 400.50
• Purity: ≥95%
• Synonyms: 5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]-N-[2-[2-(2-azidoethoxy)ethoxy]ethyl]pentanamide
• InChI: InChI=1S/C16H28N6O4S/c17-22-19-6-8-26-10-9-25-7-5-18-14(23)4-2-1-3-13-15-12(11-27-13)20-16(24)21-15/h12-13,15H,1-11H2,(H,18,23)(H2,20,21,24)/t12-,13-,15-/m0/s1
• InChIKey: OVEZMVONEJMGLZ-YDHLFZDLSA-N
• SMILES: C1[C@H]2[C@@H]([C@@H](S1)CCCCC(=O)NCCOCCOCCN=[N+]=[N-])NC(=O)N2

Biotin-PEG2-CH2CH2N3（Cat No.:I016193）is a biotinylated, azide-functionalized linker designed for bioorthogonal labeling and conjugation. The biotin group ensures high-affinity binding to avidin or streptavidin, supporting applications in detection, purification, and assay development. The PEG2 spacer improves solubility, flexibility, and reduces steric hindrance, facilitating efficient interactions in biological systems. The terminal azide group participates in copper-catalyzed or strain-promoted click chemistry with alkynes, enabling selective and stable conjugation. This reagent is widely applied in proteomics, imaging, diagnostics, and chemical biology research where dual functionality—biotin labeling and click reactivity—is required.