Biotin-PEG45-fluorescein Cat. No. B-P45F-1 5 mg修饰性聚乙二醇



Cat. No. B-P45F-1
Unit Size 5 mg
Price $385.00

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is transferred to the biolinylated molecules , thus reducing aggregation of labeled proteins in solution. The PEG spacer arm also gives the biotin a long and flexible structure to minimize steric hindrance for binding to streptavidin or avdins.

Product Features:

  • Biotinylation– label molecules and surfaces for assay or affinity purification methods involving avidin or streptavidin probes and resins
  • Cell assays–Fluorescein can be easily traced with its green fluorescent signal in FITC channel.
  • Water soluble-Biotin PEG fluorescein is soluble in common aqueous buffer and can be used directly in aqueous solution without need toxic organic solvents.


  • Appearance (color): Orange or yellow;
  • Appearance (form): Semi-solid to solid depends on MW;
  • Solubility: Soluble in DMSO, DMF or water (Pegylated);

Storage Conditions:

  • Store at -20 0C. Desiccate. Protect from light.