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t-Boc-Aminooxy-PEG3-bromide is a crosslinker containing a t-Boc-aminooxy group and a bromide (Br). The bromide (Br) is a very good leaving group for nucleophilic substitution reactions.Thet-Boc- aminoxy can be deprotected under mild acidic conditions. The hydrophilic PEG spacer increases solubility in aqueous media.

Boc-Aminooxy-PEG3-bromide is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1].

PEGs; Alkyl/ether

[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