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.
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