title: Terpenoids of Helianthus nuttallii.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D003460:Crystallization; D004224:Diterpenes / Q000302:isolation & purification*; D006368:Helianthus / Q000032:analysis*; D012717:Sesquiterpenes / Q000302:isolation & purification*
chemical_list: D004224:Diterpenes; D012717:Sesquiterpenes