cRIPGBM chloride, an orally active, proapoptotic derivative. cRIPGBM can be generated from glioblastoma multiforme (GBM) cancer stem cells (CSCs). cRIPGBM(chloride) targets to receptor-interacting protein kinase 2 ( RIPK2 ) to induce caspase 1 -dependent apoptosis . cRIPGBM(chloride) suppresses the formation of RIPK2/TAK1 (prosurvival complex), and increases the formation of RIPK2/caspase 1 (proapoptotic complex). cRIPGBM(chloride) exerts potent anti-tumor activity in vivo in animal models.