Table 1.

The compounds identified from the essential oil of the leaves of O. basilicum by GC-MS analysis.

Peak	RT	Chemical formula	Identified Compound name	Area %	Peak	RT	Chemical formula	Identified Compound name	Area %
1	5.356	C9H15Cl	(4Z)-5-chloro-3,4-dimethyl-2,4-heptadiene	0.27	21	14.262	C15H24	Cis-α-bisabolene	0.30
2	6.015	C10H16	Sabinene	0.12	22	14.850	C16H34	Hexadecane	0.20
3	6.082	C10H16	α-pinene	0.33	23	14.910	C13H21NO	N-desmethyltapentadol	0.13
4	6.260	C10H16	β- myrcene	0.25	24	15.626	C3H7NO	N-ethyl formamide	0.07
5	6.927	C10H18	cyclohexane,1-methyl-5-(1-methylethenyl)-(R) or diprene	0.17	25	15.998	C9H18N2O3	dl-alanyl-dl-norleucine	0.12
					26	16.297	C15H30O2	methyl tetradecanoate	2.70
6	6.993	C10H18O	Eucalyptol or cineole	11.19	27	17.165	C6H13N5O4	N, ᵠ-nitro-l-arginine	0.31
−7	7.198	C10H16	β –ocimene	0.78	28	17.525	C16H32O2	Pentadecanoic acid, methyl ester	0.62
8	9.161	C10H15NO	3-methoxyamphetamine	0.21	29	18.625	C17H32O2	9-hexadecenoic acid, methyl ester	2.41
9	9.329	C10H16	ᵞ-terpinene	0.42	30	18.907	C17H34O2	Hexadecanoic acid, methyl ester	19.26
10	9.519	C10H18O	α-terpineol	0.83	31	19.743	C9H13NO2	dl-phenylephrine	0.16
11	9.613	C10H12O	Estragole	1.69	32	19.876	C9H13N	Dextroamphetamine	0.18
12	10.371	C14H23N3O2	1-(3,5-dimethyl-1-adamantanoyl)semicarbazide	0.18	33	20.019	C8H22N4	N,N′-bis(3-aminopropyl)ethylenediamine	0.29
13	11.894	C10H12O2	trans-isoeugenol	13.12	34	20.112	C10H15NO	5-(2-aminopropyl)-2-methylphenol	0.30
14	12.356	C9H12N2O	2-methylamino-N-phenyl-acetamide	0.22	35	20.477	C6H9N3O	2-formylhistamine	0.21
15	12.834	C8H5N3O4	pyrido(3,4,d)imidazole,1,6-dicarboxylic acid	0.36	36	21.694	C19H34O2	9,12-octadecadienoic acid, methyl ester	2.78
16	12.949	C15H24	Trans- α –bergamotene	0.30	37	21.797	C19H36O2	9-octadecenoic acid (z)-,methyl ester	25.12
17	13.278	C15H24	Humulene	0.23	38	21.960	C19H36O2	11-octadecenoic acid, methyl ester	2.91
18	13.633	C15H32	Pentadecane	0.86	39	22.243	C19H38O2	methyl stearate	8.35
19	13.857	C15H24	β –bisabolene	1.70	40	25.281	C13H20N2O6	N-methyl-Benzeneethanamine	0.16
20	13.952	C13H26O2	Dodecanoic acid, methyl ester	0.18