C18H18O3

The molecular formula C18H18O3 may refer to:


 * Erteberel (SERBA-1), a synthetic, nonsteroidal estrogen which acts as a selective ERβ agonist
 * Obovatol, a biphenolic anti-inflammatory, anxiolytic, and nootropic
 * SERBA-2, a synthetic, nonsteroidal estrogen which acts as a selective ERβ agonist