Abstract The seed oil of Angelica acutiloba Kit. was submitted, after fractionation over silica gel, to a combined analysis by GC(RI), GC/MS and 13C-NMR. The composition was dominated by non terpenic acyclic alcohols and acetates, and phthalides. The main constituents were dodecyl acetate (33.0%), (Z)-ligustilide (17.4%), dodecanol (7.1%), p-cymene (6.4%), Î³-terpinene (5.9%) and tetradecyl acetate (5.0%). Key Word Index: Angelica acutiloba Umbelliferaeessential oil compositiondodecyl acetate(Z)-ligustilide3-(Z)-butylidene-4,5,6,7-tetrahydro-cis-6,7-dihydroxyphtalide.