PAB ADC Linkers

Mal-Acetyl-Dap(m-PEG4)-Val-Cit-PAB

Mal-Acetyl-Dap(m-PEG4)-Val-Cit-PAB-PNP

Mal-Lys(m-PEG4)-Val-Cit-PAB

Mal-Lys(m-PEG4)-Val-Cit-PAB-PNP