AIM To analyse the essential oil components of Thymus quinquecostatus Celak. METHODS Gas chromatography/mass spectrometry were used. RESULTS A total of 78 components were separated. 34 of them were identified, which accounted for 95.93% of the total peak area. The main constituents are o-cymene, carvacrol, caryophyllene, 2-isopropyl-1-methoxy-4-methylbenzene and γ-terpene. CONCLUSION Thymus quinquecostatus Celak has perfume and medical development value.
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