PC Biotin-PEG3-azide

• CAT Number: I014549
• CAS Number: 1937270-46-6
• Molecular Formula: C35H55N9O12S
• Molecular Weight: 825.93
• Purity: ≥95%
• Synonyms: 1-[4-[4-[2-[2-[2-[2-[5-[(3aR,4R,6aS)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]ethoxy]ethoxy]ethoxy]ethylamino]-4-oxobutoxy]-5-methoxy-2-nitrophenyl]ethyl N-(3-azidopropyl)carbamate
• InChI: InChI=1S/C35H55N9O12S/c1-24(56-35(48)39-10-6-11-40-43-36)25-21-28(51-2)29(22-27(25)44(49)50)55-14-5-9-32(46)38-13-16-53-18-20-54-19-17-52-15-12-37-31(45)8-4-3-7-30-33-26(23-57-30)41-34(47)42-33/h21-22,24,26,30,33H,3-20,23H2,1-2H3,(H,37,45)(H,38,46)(H,39,48)(H2,41,42,47)/t24?,26-,30-,33-/m1/s1
• InChIKey: PTNZFIYMARMNDM-CQIHFZOUSA-N
• SMILES: CC(C1=CC(=C(C=C1[N+](=O)[O-])OCCCC(=O)NCCOCCOCCOCCNC(=O)CCCC[C@@H]2[C@H]3[C@@H](CS2)NC(=O)N3)OC)OC(=O)NCCCN=[N+]=[N-]

PC Biotin-PEG3-azide（Cat No.:I014549）is a multifunctional bioconjugation reagent combining biotin labeling with click chemistry compatibility. The biotin moiety enables strong, specific binding to avidin or streptavidin systems, supporting detection, purification, and assay development. The PEG3 spacer improves solubility, reduces steric hindrance, and offers flexibility in conjugation. The terminal azide group participates in copper-catalyzed or strain-promoted click reactions with alkynes, allowing efficient and site-specific modification of biomolecules, peptides, and polymers. This reagent is widely applied in chemical biology, targeted delivery, diagnostic research, and advanced bioconjugation strategies.