IMMH-010 maleate is a prodrug that serves as a novel PD-L1 inhibitor, exhibiting potential antitumor activity for the treatment of neurological disorders and advanced malignant solid tumors. IMMH-010 maleate is rapidly converted to its active form, YPD-29B, following oral administration. IMMH-010 maleate is poised for advancing research in the field of PD-L1 inhibitors and related therapeutic applications.