Isolation and structure determination of a sesquiterpene lactone (vernodalinol) from Vernonia amygdalina extracts.
Luo X, Jiang Y, Fronczek FR, Lin C, Izevbigie EB, Lee KS. Isolation and structure determination of a sesquiterpene lactone (vernodalinol) from Vernonia amygdalina extracts. Pharm Biol. 2011 May; 49(5):464-70.