FA-PEG-COOH (MW 400)

FA-PEG-COOH (MW 400) (Folate-PEG-COOH (MW 400) ) is a PEG derivative modified with folic acid, incorporating a carboxyl group (-COOH) . The carboxyl group can easily form stable amide bonds with amino groups and ester bonds with hydroxyl groups. Folic acid (-FA) targets cell membrane receptors with high affinity folate receptors, making it suitable for targeted drug delivery.