Essential oil composition of aerial parts of Cyclospermum leptophyllum (Pers.) Sprague ex Britton and P. Wilson.

The essential oil of Cyclospermum leptophyllum (Pers.) Sprague ex Britton and P. Wilson syn. Apium leptophyllum (Pers.) F. Muell. Ex Benth., family Apiaceae (Umbellifereae), was analysed by GC and GC-MS. The essential oil showed the presence of thymohydroquinone dimethyl ether (50.7%), thymol methyl ether (11.2%), γ-terpinene (10.4%), p-cymene (9.5%) and carvacrol methyl ether (5.9%), along with trans-ocimene, β-pinene, germacrene D, cumin aldehyde, α-humulene, β-myrcene, sabinene, limonene, β-phellandrene, caryophyllene oxide, α-pinene and α-thujene as minor constituents. To the best of our knowledge, this is the first study of the essential oil composition of C. leptophyllum collected from India.