• CAS No.：
  1365655-89-5
• Synonyms：
  Biotin-PEG2-Acid
  Biotin-PEG2-CH2CH2COOH
  Propanoic acid, 3-[2-[2-[[5-[(3aR,4R,6aS)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]ethoxy]ethoxy]-, rel-
  3-(2-(2-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)etho
  
• Purity：
  ≥95%
• MF：
  C₁₇H₂₉N₃O₆S
• MW：
  403.5
• 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-PEG2-COOH (Biotin-PEG2-acid) is a bifunctional reagent with a biotin group and a carboxylic acid group connected by a hydrophilic PEG spacer. The carboxylic acid group reacts with amine-containing macromolecules, forming stable amide bonds. The biotin group serves as an affinity label for proteins such as avidin and streptavidin, facilitating targeted bioconjugation and purification in various biomedical applications.

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