Bromo-PEG3-azide

• CAT Number: I015794
• CAS Number: 1446282-43-4
• Molecular Formula: C8H16BrN3O3
• Molecular Weight: 282.13
• Purity: ≥95%
• Synonyms: 1-azido-2-[2-[2-(2-bromoethoxy)ethoxy]ethoxy]ethane
• InChI: InChI=1S/C8H16BrN3O3/c9-1-3-13-5-7-15-8-6-14-4-2-11-12-10/h1-8H2
• InChIKey: XSJKYJPWZDLXTI-UHFFFAOYSA-N
• SMILES: C(COCCOCCOCCBr)N=[N+]=[N-]

Bromo-PEG3-azide（Cat No.:I015794）is a compact heterobifunctional linker designed for efficient and selective bioconjugation. It carries a terminal bromide group that undergoes nucleophilic substitution with thiols, amines, or other reactive groups, and an azide moiety that enables copper-catalyzed or strain-promoted click chemistry with alkynes. The PEG3 spacer provides hydrophilicity, flexibility, and reduced steric hindrance, ensuring good solubility and reactivity in both aqueous and organic systems. This reagent is widely used in chemical biology, probe development, proteomics, and drug discovery, enabling modular assembly, surface functionalization, and multifunctional molecular design strategies.