The molecule is a sesquiterpene lactone that is the C-8 epimer of helenalin. Isolated from the aerial parts of Inula hupehensis, it exhibits anti-inflammatory activity. It has a role as a metabolite, an anti-inflammatory agent and a plant metabolite. It is a gamma-lactone, a cyclic ketone, an organic heterotricyclic compound, a secondary alcohol and a sesquiterpene lactone.
(3aS,5R,5aR,8aR,9S,9aS)-9-hydroxy-5,8a-dimethyl-1-methylidene-3a,4,5,5a,9,9a-hexahydroazuleno[6,7-b]furan-2,8-dione