TU Wien (CLIP) contributes to the project consortium by their knowledge and experience with alpha-particle emitting radionuclides as well as radionuclide production. CLIP designed the actinium-225 generator and drafted the part of the research concept concerning their highly interesting radionuclide for the chelators as described in the work package "Development of 225Ac Generator". They will also support radiolabelling efforts with 225Ac described in the work packages 3-1, 4-1 and 7-1.