DBCO-PEG4-NHS ester (CAS: 1427004-19-0) is a bioconjugation linker with DBCO for copper-free click chemistry and NHS ester for amine coupling. Its PEG4 spacer enhances solubility, making it ideal for protein labeling, drug delivery, and bioorthogonal applications.
Polyethylene Glycol PEG Linkers > DBCO PEG > DBCO-PEG-NHS ester
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