6-Arm-PEG-FA (MW 5000) (6-Arm-PEG-Folate (MW 5000)) is a PEG derivative modified with Folic acid. Polyethylene glycol enhances solubility and stability, reduces the immunogenicity of peptides and proteins, and can inhibit nonspecific binding of charged molecules to modified surfaces. Folic acid (-FA) has a high affinity for folate receptors, making it useful for targeted drug delivery to cell membrane receptors.
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