[CAS NO. ]  4-ArmPEG-COOH

• Synonyms：
  4-ArmPEG-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-ArmPEG-COOH, also known as 4-Arm PEG-carboxylic acid, is a multiarm PEG derivative featuring carboxylic acid (–COOH) groups at the end of each of its four arms, all connected to a central pentaerythritol core. This unique star-shaped structure imparts high water solubility, excellent biocompatibility, and multiple reactive sites, making it highly valuable for a range of biomedical and material science applications.

The terminal carboxylic acid groups allow for easy conjugation with amine-containing molecules using standard peptide coupling reagents, facilitating the synthesis of complex biomaterials and functional coatings

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