Verdian-Rizi Mohammadreza , Essential Oil Composition and Biological Activity of Ziziphora clinopodioides Lam. from Iran, Research Journal of Pharmacology, Volume 2,Issue 2, 2008, Pages 17-19, ISSN 1815-9362, rjpharm.2008.17.19, (https://makhillpublications.co/view-article.php?doi=rjpharm.2008.17.19) Abstract: The chemical composition of the essential oil obtained by hydrodistillation from the aerial parts of Ziziphora clinopodioides Lam. growing in Iran was analysed by GC and GC/MS. Twenty-six components accounting to 97.62% of the total oil were identified. The major components were pulegone (36.45%), piperitenone (19.12%), Menth-2-en-1-ol (5.31%), carvacrol (5.10%), neomenthol (4.78) and menthone (4.46%). The essential oil was tested against Anopheles stephensi and Culex pipiens larvae. The results obtained show that the essential oil could be considered as natural larvicidal agents. Keywords: Ziziphora clinopodioides Lam.;essential oil;GC/MS;biological activity