• CAS No.：
  1415800-35-9
• Synonyms：
  Mal-NH-PEG4-CH2CH2COOtBu
  Mal-Amido-PEG4-t-butyl ester
  Mal-amido-PEG4-Boc
  Maleimide-C2-amido-PEG4-Carboxylic acid tert-butyl ester
  
• Purity：
  ≥95%
• MF：
  C₂₂H₃₆N₂O₉
• MW：
  472.5
• 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.

Mal-NH-PEG4-OtBu (Mal-Amido-PEG4-t-butyl ester) is a monodispersed PEG derivative containing a maleimide group and a t-butyl ester group. The PEG spacer increases the water solubility of the resulting compound. The t-butyl protected carboxyl group protected can be deprotected under acidic conditions. The maleimide group reacts specifically with the thiol group to form a covalent C-S bond, allowing it to be biologically linked to thiol-containing molecules.

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