Ald-PEG4-NHS ester is a heterobifunctional crosslinking reagent used for bioconjugation. Its structure features an aldehyde group and an N-hydroxysuccinimide (NHS) ester linked by a hydrophilic polyethylene glycol (PEG) spacer, enabling site-specific conjugation of biomolecules.
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CAS 1353011-74-1
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