• Synonyms：
  4-ArmPEG-CH2COOH
  4-ArmPEG-Acetic acid
  
• Recommended Storage Condition：
  Store at -5°C,keep in dry and avoid sunlight.
• Uses：
  

4-ArmPEG-AA (4-Arm PEG-Acetic Acid) is a four-arm PEG derivative with a central core and four reactive acetic acid end groups. This branched PEG structure offers multiple functional sites, making it a useful building block for bioconjugation, drug delivery, hydrogel formation, and surface modification. 

Biopharma PEG offers a wide range of PEG linkers on both lab and commercial scales. Email at [email protected] and start using a superior product for your next product R&D project.