ONC206 is a chemical analogue of ONC201. ONC206 is a benzyl-flurobenzyl imipridone that has highly potent activity in preclinical models of difficult-to-treat neuroendocrine tumors and sarcomas. ONC206 acts as a selective antagonist of DRD2 at nanomolar concentrations and has broad-spectrum anti-tumor activity. ONC206 may address tumor types where the properties of ONC201 do not permit for complete therapeutic engagement in vivo.