Product Description: 8β-(4-Acetoxy-5-hydroxytigloyloxy)costunolide (compound 5) is a sesquiterpene lactone that can be isolated from Stevia alpina var. glutinosa[1].
Formula: C22H28O7
References: [1]de Hernández Z N J, et al. Sesquiterpene lactones from Stevia alpina var. glutinosa[J]. Phytochemistry, 1999, 51(1): 79-82.