[CAS NO. ]  4-ArmPEG-GA

• Synonyms：
  4-ArmPEG-Glutaric Acid
  
• Purity：
  ≥95%
• 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.

4-Arm PEG-glutamic acid (4-arm PEG-GA) is a multiarm PEG derivative featuring four terminal carboxylic acid groups linked to a pentaerythritol core. With a C3 hydrocarbon ester connecting the PEG to the glutamic acid carboxyl groups, it enables reversible PEGylation. This structure allows for effective coupling with amine groups using peptide coupling reagents like NHS, DCC, and EDC, making 4-arm PEG-GA a powerful tool for bioconjugation and targeted drug delivery applications.

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