MSC-4381

MSC-4381 (MCT4-IN-1) is an orally active, selective inhibitor of monocarboxylate transporter 4 (MCT4) with an IC50 of 77 nM and a Ki of 11 nM. It has the potential to inhibit lactate efflux and promote intracellular lactate accumulation in MCT4-expressing cell lines.