en Composition of the Essential Oils of <i>Thymus deanensis</i> Celak Var. <i>deanensis</i> from Different Regions of Iran فارماكوگنوزی و فارماسيوتيكس Pharmacognosy & Pharmaceutics پژوهشی Research <div dir="ltr" style="text-align: justify;"><strong>Background:</strong> <em>Thymus deanensis</em> is a known aromatic plant which grows widely in Iran and many mediterranean regions. In previous studies composition of essential oils of many species of <em>Thymus</em> genus reported which they were rich of phenols like Thymol and Carvacrol. <strong>Methods:</strong> Water distilled essential oils from aerial parts of <em>Thymus deanensis</em> var. <em>deanensis</em> from three different localities in Iran were analyzed by GC and GC/MS. <strong>Results:</strong> 20 compounds representing 87.8% of the region of Azerbaijan Mountains (A) oil were identified with thymol (70.8%), carvacrol (6.3%) as main constituents. 13 compounds representing 98.6 % of Damavand, Mosha (B) oil were identified with thymol (53.6%), carvacrol (23.8%) and p-cymene (11.0 %) and then thymol (72.1%) and p-cymene (5.3%) were the major constituents of the latter oil Chaharmahal Bakhtiari (C) among the 16 compounds characterized which represented 99.6% of the oil. <strong>Conclusions: </strong>The composition of three samples of <em>Th. deanensis</em> oils in our research was similar to the composition of other phenol&ndash;rich Iranian species. Although the content of thymol in <em>Th. deanensis</em> is higher than many reported cultivated <em>Thymus vulgaris</em>.</div> <div dir="ltr" style="text-align: justify;"><strong>Background:</strong> <em>Thymus deanensis</em> is a known aromatic plant which grows widely in Iran and many mediterranean regions. In previous studies composition of essential oils of many species of <em>Thymus</em> genus reported which they were rich of phenols like Thymol and Carvacrol. <strong>Methods:</strong> Water distilled essential oils from aerial parts of <em>Thymus deanensis</em> var. <em>deanensis</em> from three different localities in Iran were analyzed by GC and GC/MS. <strong>Results:</strong> 20 compounds representing 87.8% of the region of Azerbaijan Mountains (A) oil were identified with thymol (70.8%), carvacrol (6.3%) as main constituents. 13 compounds representing 98.6 % of Damavand, Mosha (B) oil were identified with thymol (53.6%), carvacrol (23.8%) and p-cymene (11.0 %) and then thymol (72.1%) and p-cymene (5.3%) were the major constituents of the latter oil Chaharmahal Bakhtiari (C) among the 16 compounds characterized which represented 99.6% of the oil. <strong>Conclusions: </strong>The composition of three samples of <em>Th. deanensis</em> oils in our research was similar to the composition of other phenol&ndash;rich Iranian species. Although the content of thymol in <em>Th. deanensis</em> is higher than many reported cultivated <em>Thymus vulgaris</em>.</div> <,i>,Thymus deanensis<,/i>, var. <,i>,deanensis<,/i>,, Oil composition, Thymol, Carvacrol, P-cymene <,i>,Thymus deanensis<,/i>, var. <,i>,deanensis<,/i>,, Oil composition, Thymol, Carvacrol, P-cymene 34 39 http://jmp.ir/browse.php?a_code=A-10-149-1&slc_lang=en&sid=1 M Abousaber M Abousaber 100319475328460037130 100319475328460037130 No Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences M Khanavi Khanavi khanavim@tums.ac.ir 100319475328460037131 100319475328460037131 Yes Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences M Khoshchehreh M Khoshchehreh 100319475328460037132 100319475328460037132 No Evidence Based Medicine Group, the Endocrine and Metabolism Research Center, Shariati Hospital, Tehran University of Medical Sciences Evidence Based Medicine Group, the Endocrine and Metabolism Research Center, Shariati Hospital, Tehran University of Medical Sciences A Hadjiakhoondi A Hadjiakhoondi 100319475328460037133 100319475328460037133 No Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences MR Shams Ardekani MR Shams Ardekani 100319475328460037134 100319475328460037134 No Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences Department of Pharmacognosy and Medicinal Plants Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences A Shafiee A Shafiee 100319475328460037135 100319475328460037135 No Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences Department of Medicinal Chemistry, Faculty of Pharmacy, Tehran University of Medical Sciences