NHS-PEG-CHO (MW 3400)

NHS-PEG-CHO (MW 3400) (NHS-PEG-Aldehyde (MW 3400) ) is a PEG derivative composed of an aldehyde group (-CHO), PEG units, and an NHS ester. The NHS ester can couple with amino acids or other amine-containing molecules. The aldehyde group is a reactive functional group that can interact with compounds containing amino or hydroxyl groups.