The composition of the steam volatile constituents of the flowering aerial parts of Craniotome furcata (Link.) O. Kuntze was determined by GC, GC/MS and NMR. The oil was constituted mainly of sesquiterpene hydrocarbons (68%). The main constituents were germacrene D (49.2%), germacrene D-4-ol (8.8%), epi-α-cadinol (5.9%) and 10-epi-γ-eudesmol (4.2%). Germacrene-derivative constituents represented 61.5% of the total oil.
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