English Helenalin Cited by user RetractionBot on 27 Sep 2024 Helenalin, or (-)-4-Hydroxy-4a,8-dimethyl-3,3a,4a,7a,8,9,9a-octahydroazuleno[6,5-b furan-2,5-dione, is a toxic sesquiterpene lactone which can be found in several plants…