6-Arm-PEG-FA (MW 400)

6-Arm-PEG-FA (MW 400) (6-Arm-PEG-Folate (MW 400) ) is a PEG derivative modified with folic acid. Polyethylene glycol (PEG) enhances solubility and stability, reducing the immunogenicity of peptides and proteins, and inhibits nonspecific binding of charged molecules on modified surfaces. Folic acid (-FA) possesses high affinity for folate receptors, useful for targeting drug delivery to cell membrane receptors.