Description
N-(Aminooxy-PEG3)-N-bis(PEG4-t-butyl ester) is a bifunctional PEG linker featuring aminooxy groups and t-butyl ester moieties. The aminooxy groups can selectively react with aldehydes to form stable oxime bonds or with ketones to yield hydroxylamine linkages upon reduction. The t-butyl ester groups are susceptible to hydrolysis under acidic conditions, facilitating further modification. The hydrophilic PEG linkers enhance the water solubility and biocompatibility of the compound.
Applications
N-(Aminooxy-PEG3)-N-bis(PEG4-t-butyl ester) can be used in bioconjugation chemistry, particularly in the labeling and modification of biomolecules. Its ability to selectively react with aldehydes and ketones makes it valuable for site-specific conjugation and immobilization of proteins, peptides, and carbohydrates. The resulting oxime or hydroxylamine linkages offer stability and versatility in various biological and biomedical applications, including drug delivery systems, diagnostics, and biomaterials engineering. Additionally, the hydrolysis of t-butyl ester groups enables controlled release of payloads or attachment of functional groups for downstream applications.