Anion transporter-4 (Compound 6) is a small molecule anion transporter protein that induces microtubule degradation and disrupts mitochondrial function. It elevates intracellular anion levels, such as chloride ions, by altering microtubule dynamics, promoting lipid peroxidation, and impairing mitochondrial function. Anion transporter-4 exerts anticancer effects by triggering ferroptosis and holds potential for cancer research.