Timosaponin b-II (CAS 136656-07-0) is a steroidal saponin isolated from the traditional medicinal herb Anemarrhena asphodeloides Bge. Pharmacological investigations have identified multiple biological effects attributed to its action on cellular signaling pathways. Primarily, Timosaponin b-II modulates apoptosis-related mechanisms, influencing the expression of Bcl-2 family proteins and activation of caspases, thereby initiating apoptotic cell death in various cancer cell types. Due to these properties, it has become a compound of interest in oncology research, particularly in studies focused on chemotherapeutic and cytotoxic activities. Store compound under sealed, cool, and dry conditions.