title: Phytochemical investigation of Xanthium spinosum L.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004534:Egypt; D010946:Plants, Medicinal / Q000032:analysis*; D012855:Sitosterols / Q000302:isolation & purification*; D014315:Triterpenes / Q000302:isolation & purification; D014970:Xanthines / Q000302:isolation & purification*
chemical_list: D012855:Sitosterols; D014315:Triterpenes; D014970:Xanthines