title: Constituents of Helenium amarum, IV. Desacetyl-1-epiisotenulin.
mesh_terms: D052176:Azulenes; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000032:analysis*; D012717:Sesquiterpenes / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D052176:Azulenes; D012717:Sesquiterpenes; C042681:desacetyl-1-isotenulin; C011124:tenulin