title: Isolation of ent-16-kauren-19-oic acid and ent-16-kauren-19-ol from abrotanella nivigena muell.
mesh_terms: D002850:Chromatography, Gel; D013058:Mass Spectrometry; D010944:Plants / Q000032:analysis*; D013729:Terpenes / Q000302:isolation & purification*
chemical_list: D013729:Terpenes