Phthalimide Protected Aminooxy Reagents

Phthalimide-Protected Aminooxy Reagents in multifunctional uniform PEG linkers are PEG-based molecules that feature an aminooxy (-ONH₂) group temporarily masked with a phthalimide protecting group. This protection strategy prevents premature reactions during synthesis or storage and can be removed under mild conditions to reveal the reactive aminooxy group for conjugation with aldehydes or ketones via stable oxime bond formation. These linkers are well-suited for precise, site-specific bioconjugation, while benefiting from PEG’s solubility and biocompatibility.