Description_x000D_ General description_x000D_ Natural product derived from plant source._x000D_ Biochem/physiol Actions_x000D_ Tephrosin is a plant-based rotenoid which has known anti-cancer properties. Tephrosin inhibited proliferation in A549 cancer cells in a dose-sependent manner. Tephrosin has been shown to induce capase-independent apoptosis, and internalization and degradation of inactivated EGFR and ErB2 in human colon cancer cells.