Azido-PEG3-SS-PEG3-azide is a polyethylene glycol (PEG) based linker commonly employed in the synthesis of proteolysis targeting chimeras (PROTACs)[1].
Azido-PEG3-SS-NHS is a three-unit polyethylene glycol (PEG) linker functionalized with an azide group, a cleavable disulfide bond, and an N-hydroxysuccinimide ester. It is primarily employed in the synthesis of antibody-drug conjugates (ADCs) [1].