Biotin-PEG3-azide is a PEG-based PROTAC linker can be used in the synthesis of PROTACs.

Biotin-C2-PEG3-azide is a biotin with the azide tag, it can be conjugated to antiviral inhibitors, for example, RYL-634, which shows excellent broad-spectrum inhibition activity against various pathogenic viruses, including hepatitis C virus, dengue virus, Zika virus, chikungunya virus, enterovirus^[1].
PROTACs contain two different ligands connected by a linker; one is a ligand for an E3 ubiquitin ligase and the other is for the target protein.
PROTACs exploit the intracellular ubiquitin-proteasome system to selectively degrade target proteins.

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

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• [1]. Yang Y, et al. Discovery, Optimization, and Target Identification of Novel Potent Broad-Spectrum Antiviral Inhibitors.J Med Chem. 2019 Apr 25;62(8):4056-4073.