title: Helenalinmethacrylate, a new pseudoguaianolide from the flowers of Arnica montana L. and the sensitizing capacity of their sesquiterpene lactones.
mesh_terms: D000485:Allergens / Q000302:isolation & purification*; D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D005260:Female; D006168:Guinea Pigs; D008689:Methacrylates / Q000302:isolation & purification / Q000494:pharmacology; D010946:Plants, Medicinal / Q000032:analysis*; D012717:Sesquiterpenes / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: D000485:Allergens; D008689:Methacrylates; D012717:Sesquiterpenes