O-Methyl 15-Oxo 17-Hydro Gibberellin A3 Diacetate is an intermediate in synthesizing 15β-OH Gibberellin A3 (G377485), which is a hormone that is found in plants which promotes the growth and elongation of cells. Gibberellic Acid acts as a plant growth regulator on account of its physiological and morphological effects in extremely low concentrations.