Bis-PEG1-PFP ester is a non-cleavable ADC linker incorporating a 1-unit PEG moiety, specifically designed for the synthesis of antibody-drug conjugates (ADCs)[1].
Bis-PEG2-PFP ester is a non-cleavable 2-unit polyethylene glycol (PEG) linker employed in the synthesis of antibody-drug conjugates (ADCs) [1]. Additionally, Bis-PEG2-PFP ester serves as a PEG-based linker for the synthesis of proteolysis targeting chimeras (PROTACs) [2].