Anticanceragent 205 (compound 9) is an effective anticancer agent that binds to the G4-mtDNA target, inhibiting the replication, transcription, and translation of mtDNA (mitochondrial genome). It induces mitochondrial dysfunction, increases ROS production, and triggers DNA damage and cellular senescence. Anticanceragent 205 also promotes apoptosis and causes cell cycle arrest at the G0/G1 phase, showing potential for research in colorectal cancer.