CatalogID: 10784 Purity: ≥95% CAS NO.: 1415800-35-9

  • CAS No.:
  • Synonyms:
    Mal-Amido-PEG4-t-butyl ester
    Maleimide-C2-amido-PEG4-Carboxylic acid tert-butyl ester
  • Purity:
  • MF:
  • MW:
  • 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.

Biopharma PEG provides high purity monodisperse (discrete) PEG with an extensive variety of functional groups(such as Mal-Amido-PEG4-t-butyl ester), from grams to kilogram, even tons batch size in both non-GMP and GMP grades. Email at and start using a superior product for your next product R&D project.