Fmoc-Val-Cit-PAB-OH is a useful heterobifunational linker for making Antibody-Drug-Conjugates (ADC) for targeting drug delivery. The Val-Cit will specifically be cleaved by catepsin B. As this enzyme is only present in the lysosome, the ADC payload will only be released in the cell. The azido group will react with DBCO, BCN or other Alkyne group through click chemistry. The PEG spacer increases aqueous solubility. References: Sano K, Nakajima T, Miyazaki K, Ohuchi Y, Ikegami T, Choyke PL, Kobayashi H. Short PEG-linkers improve the performance of targeted, activatable monoclonal antibody-indocyanine green optical imaging probes. Bioconjug Chem. 2013 May 15;24(5):811-6. doi: 10.1021/bc400050k. Epub 2013 May 3. PubMed PMID: 23600922; PubMed Central PMCID: PMC3674550.

纯度：≥98%

CAS：159858-22-7