CAS No. 875770-34-6

Biotin-PEG3-azide Chemical Structure
Chemical Structure
Check the Biotin-PEG3-azide product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 875770-34-6
Molecular Formula

C18H32N6O5S
Molecular Weight (MW) 444.55

Ordering Information

Biological Activity

Biotin-PEG3-azide is a hydrophilic biotinylation reagent used for labeling alkyne-containing biomolecules, peptides, and proteins via copper-catalyzed azide-alkyne cycloaddition (CuAAC) or copper-free strain-promoted azide-alkyne cycloaddition (SPAAC). The incorporation of a triethylene glycol (PEG3) spacer enhances aqueous solubility, reduces steric hindrance, and minimizes non-specific binding during streptavidin-based affinity purification and detection of target biomolecules. [1][2]

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Note: Technical data last updated: Sep 1, 2026.