C20H18O4

The molecular formula C20H18O4 may refer to:


 * Glabrene, an isoflavonoid that is found in Glycyrrhiza glabra (licorice)
 * Phaseolin (pterocarpan), a prenylated pterocarpan found in French bean (Phaseolus vulgaris) seeds and in the stems of Erythrina subumbrans