Abstract Distillation of the flowering tops of Seseli buchtormense (Fisch. ex Sprengel) W. Koch obtained from various altitudes of Altai Region yielded 0.21% (300 m.a.s.l.), 32% (400 m.a.s.l.), 30% (700 m.a.s.l.) and 0.40% (2030 m.a.s.l.), of aromatic pure mobile oil. Analysis of the oil samples using GC, GC/MS gave 82 components. The major components were sabinene (17.7â25.1%), α-pinene (5.3â14.6%), (E)-nerolidole (5.5â11.6%), β-phelandrene (2.5â7.0%), β-myrcene (3.3â6.6%), δ-kadinene (3.0â6.0%), germacrene D-4-ol (3.1â4.6%), α-bosabolol (0.0â7.7%), fenchone (0.5â7.0%) and limonene (0.8â4.5%). Key Word Index: Seseli buchtormense Apiaceaeessential oil compositionsabinene(E)-nerolidoleα-bosabolol