5,8,11,14-Tetraoxa-2-azaheptadecanedioic acid, 1-(bicyclo[6.1.0]non-4-yn-9-ylmethyl) 17-(2,5-dioxo-1-pyrrolidinyl) ester

endo-BCN-PEG4-NHS ester can be used to label the primary amines (-NH2) of proteins, amine-modified oligonucleotides, and other amine-containing molecules. The BCN group enables copper free click chemistry with azide-tagged biomolecules. The hydrophilic PEG spacer increases solubility in aqueous media.

endo-BCN-PEG4-NHS ester is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs[1]. endo-BCN-PEG4-NHS ester is a click chemistry reagent, it contains a BCN group that can undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing Azide groups.

PEGs

[1] An S, et al. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562 DOI:10.1016/j.ebiom.2018.09.005