• CAS No.：
  365441-71-0
• Synonyms：
  Biotin-PEG24-NHS
  
• Purity：
  ≥95%
• MF：
  C₆₅H₁₂₁N₄O₃₀S
• MW：
  1469
• 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-PEG24-SPA (Biotin-PEG24-NHS Ester) is a biotinylation reagent featuring a biotin group and an NHS ester linked by a 24-unit PEG spacer. The PEG spacer enhances solubility in aqueous media, improving compatibility in biological applications. The NHS ester group efficiently reacts with lysine residues and N-terminal amino groups within a pH range of 7-9, forming stable amide bonds. This reagent is ideal for labeling proteins, peptides, and other biomolecules with biotin, supporting various applications in affinity assays, pull-downs, and other biotin-streptavidin-based techniques.

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