HO-PEG-valeric acid, MW 3,400 is a water soluble PEG polymer with a terminal carboxylic acid. The hydroxyl group can be further modified to derivatize the compound. The carboxylic acid can react with primary amines in the presence of activator, such as EDC or HATU, to form a stable amide bond. Reagent grade, for research purpose.
Usually ships within 24 hours.