N-(Biotin-PEG4)-N-bis(PEG4-acid) HCl salt is a branched biotinylation reagent for labeling. The carboxylic acid groups can react with primary amines in the presence of EDC and HATU to form stable amide bonds.
N-(Biotin-PEG4)-N-bis(PEG4-acid) HCl salt Supplier
