(2bS,5S,8S,9S)-5-Hydroxy-9-methyl-6-methylene-11-oxododecahydro-1aH-2,9-(epoxymethanooxy)-5,7a-methanocyclohepta[1,2]indeno[5,6-b]oxirene-8-carboxylic Acid is an impurity in the synthesis of 1,2-Epoxy GA3 (E589425), which is a derivative of Gibberellic Acid (G3774500), 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. Generally Gibberellic acid affects only the plant parts above the soil surface.