NHS-PEG-CHO (MW 2000) (NHS-PEG-Aldehyde (MW 2000)) is a PEG derivative composed of an aldehyde group (-CHO), PEG units, and an NHS ester. The NHS ester can react with amino acids or other molecules containing amine groups, while the aldehyde group is a reactive functional group that can interact with compounds containing amine or hydroxyl groups.
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