• CAS No.：
  1458576-00-5
• Purity：
  ≥95%
• MF：
  C₂₁H₃₅N₃O₆S
• MW：
  457.6
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  Applicated in medical research, drug-release, nanotechnology and new materials research, cell culture. In the study of ligand, polypeptide synthesis support, a graft polymer compounds, new materials, and polyethylene glycol-modified functional coatings and other aspects of the active compound.

Biotin-PEG4-Alkyne (CAS NO.: 1458576-00-5) is a PEG linker featuring a biotin group and a terminal alkyne. The biotin group is ideal for affinity-based applications, such as pull-down assays, and for binding to streptavidin proteins with high specificity. The terminal alkyne enables copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC), forming stable triazoles with azide-containing molecules.

This biotin-labeled, PEG-based linker is widely used in the synthesis of PROTACs, as well as in bioconjugation and chemical biology research. Its hydrophilic PEG spacer enhances solubility, making it a valuable tool for creating functionalized molecules in drug discovery and biomolecular applications.

Biopharma PEG offers a wide range of PEG linkers on both lab and commercial scales. Email at sales@biochempeg.com and start using a superior product for your next product R&D project.