The molecule is a C19-gibberellin, initially identified in Gibberella fujikuroi. It differs from gibberellin A1 in the absence of the beta-OH at C-9 and the alpha-OH at C-7, the substitution of the methylene group at C-8 by a beta-Me and the presence of an alpha-OH also at C-8 (all gibbane skeletal numberings). It has a role as a plant metabolite. It is a C19-gibberellin, a gibberellin monocarboxylic acid and a lactone.
(1R,2R,5R,6R,8R,9S,10R,11R)-6-hydroxy-6,11-dimethyl-16-oxo-15-oxapentacyclo[9.3.2.15,8.01,10.02,8]heptadecane-9-carboxylic acid