Helmholtz Zentrum Dresden Rossendorf has patented 3-((3-([1,1’-biphenyl]-3-ylmethoxy)phenoxy)methyl)benzonitrile derivatives that are radiolabeled compounds targeting programmed cell death 1 ligand 1 (PD-L1; CD274). They are reported to be potentially useful for the diagnosis and/or radionuclide therapy treatment of cancer and SARS-CoV-2.