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t-Boc-aminooxy-PEG5-propargyl is a click crosslinker. Propargyl group is reactive with azide-bearing compounds or biomolecules via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. T-Boc-aminooxy can be converted to free aminooxy under mild acidic conditions and then can react with an aldehyde or ketone. The hydrophilic PEG spacer increases solubility in aqueous media.

Boc-aminooxy-PEG5-propargyl is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. Boc-aminooxy-PEG5-propargyl is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.

PEGs

[1] Zhao B, et al. Protein Engineering in the Ubiquitin System: Tools for Discovery and Beyond. Pharmacol Rev. 2020 Apr;72(2):380-413. DOI:10.1124/pr.118.015651