Acid-PEG4-SS-PEG4-acid is a high-purity cleavable PEG linker with dual carboxylic acids for amide coupling and a disulfide bond specifically for controlled release, connected by PEG4 spacers.
Polyethylene Glycol PEG Linkers > Homobifunctional PEG > Other Homobifunctional PEG
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