ML311, also known as EU-5346, is a potent and selective inhibitor of the Protein-Protein Interaction of Mcl-1 and Bim. ML311 Potently and Selectively Disrupts the Protein-Protein Interaction of Mcl-1 and Bim. EU-5346 will be a useful tool for studying lymphoid tumorigenesis and to demonstrate the potential for using this strategy in therapies intended to bypass apoptosis resistance pathways that are activated in drug-resistant tumors.