N-(azide-PEG3)-N'-(m-PEG4)-Benzothiazole Cy5 is a polyethylene glycol (PEG)-based PROteolysis TArgeting Chimeras (PROTACs) linker, employed for the synthesis of PROTACs[1].
N-(m-PEG4)-N'-(Acid-PEG3)-benzothiazole Cy5 is a polyethylene glycol-based linker termed PEG-PROTAC, suitable for the development of PROTACs through chemical synthesis[1].