Table 1.

Principal constituents of Thymus vulgaris essential oil, their relative percentages of the total chromatogram area, and Kovats Index.

Composition	Id. 1	KI	Thymus vulgaris (%)
α-Pinene	KI, W	937	1.12
β-Pinene	KI, W	948	2.85
Camphene	KI, W	970	4.78
Sabinene	KI, W	993	1.94
β-Pinene	KI, W	1000	2.76
Myrcene	KI, W	1003	3.27
1-Octen-3-ol	KI, W	1023	0.78
α-Terpinene	KI, W	1035	0.87
Limonene	KI, W	1046	3.43
β-Cymene	KI, W	1051	3.74
1,8-Cineole	KI, W	1062	12.30
γ-Terpinene	KI, W	1074	2.26
Terpinolene	KI, W	1103	0.45
trans-Sabinene hydrate	KI, W	1118	1.30
Linalool	KI, W	1142	1.90
cis-Sabinene hydrate	KI, W	1154	0.87
Terpineol	KI, W	1174	0.31
trans-Pinocarveol	KI, W	1199	1.36
Verbenol	KI, W	1207	1.32
Camphor	KI, W	1215	11.23
Terpinen-4-ol	KI, W	1228	5.50
Borneol	KI, W	1238	8.87
α-Terpineol	KI, W	1250	5.83
Myrtenol	KI, W	1260	0.23
cis-Carveol	KI, W	1263	0.25
Citronellal	KI, W	1279	0.17
Linalyl acetate	KI, W	1284	0.38
Verbenone	KI, W	1294	0.23
Bornyl acetate	KI, W	1331	2.38
α-Terpenyl acetate	KI, W	1388	0.93
β-Bourbonene	KI, W	1416	0.63
Bornyl acetate	KI, W	1421	1.91
α-Gurjunene	KI, W	1436	0.13
trans-Caryophyllene	KI, W	1460	3.98
Alloaromadendrene	KI, W	1497	2.03
Germacrene-D	KI, W	1522	0.57
α-Murolene	KI, W	1525	0.73
Bicyclogermacrene	KI, W	1537	1.65
δ-Cadinene	KI, W	1545	2.74
Hedycariol	KI, W	1616	1.12

¹ “KI, W” means that identification was based on Kováts indexes (KI) and comparison with the Wiley library (W).