t-Butyloxycarbonyl-valyl-citrullyl-(4-aminobenzyl)-(4-nitrophenyl)carbonate

Linker for Antibody-Drug-Conjugation (ADC). The Val-Cit will specifically be cleaved by catepsin B. As this enzyme is only present in the lysosome the ADC payload will be release only in the cell. Reference: Laurent Ducry (ed.), Antibody-Drug Conjugates, Methods in Molecular Biology, vol. 1045, DOI 10.1007/978-1-62703-541-5_5, # Springer Science+Business Media, LLC 2013.