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Ammi visnaga oil
The fruit (seed) oil of Ammi visnaga L., known as visnaga oil or khella oil, is a low-volume oil that possesses some similarities to a green mixture of Roman chamomile and tagetes oils.
Stahl (1981) reported that the oil of A. visnaga contained linalool, cis- and trans-linalool oxide (furanoid form), a-terpineol, terpinen-4-ol, camphor and carvone. Stahl and Sinnwell (1986) reported the isolation of a diterpenoid ester in A. visnaga oil at a level of 0.03%. Structural elucidation revealed that this compound was characterized as 4-acetyoxymethyl-2-[(5-methyl-1- methylene)-4-hexenyl]-1-methyl-1-(4- methyl-3-pentenyl)-cyclobutane.