Abstract Distillation of the flowering tops of Sium latifolium L, from Altai Region for 3 h yielded 0.05%, mobile colorless oil reminiscent of angelica root oil. By analyzing the oil samples using GC and GC/MS, we found that the major components were limonene (32.4%), sabinene (21.7%), Î±-pinene (12.7%) and Î³-terpinene (10.2%).