Table 2:

Chemical composition of essential oil obtained from oleo-gum-resin of Ferula assa-foetida

No.	Composition	%
1	E-1-propenyl sec-butyl disulfide	36.15
2	Z-1-propenyl sec-butyl disulfide	27.93
3	Guaiol	5.50
4	Carotol	5.14
5	bis (1-methyl propyl) disulfide	3.17
6	α-gurjunene	2.49
7	bis [(1-methylthio) propyl] disulfide	1.12
8	α- longipinene	1.86
9	Methyl penthyl tetrasulfide	1.16
10	Eudesmol(10-epi-gama)	0.98
11	Propyl n-butyl disulfide	0.97
12	δ-cadinene	0.95
13	Germacrene B	0.90
14	Methyl 1-(methylthio) ethyl disulfide	0.87
15	E-β-ocimene	0.70
16	Methyl 1-(methylthio) propyl disulfide	0.66
17	β- humulene	0.47
18	β- himachalene	0.44
19	Valencene	0.36
20	Methyl sec-butyl disulfide	0.33
21	Eudesmol(7-epi-alpha)	0.33
22	Patchouli alcohol	0.29
23	α- humulene	0.28
24	Cedrene	0.24
25	α- ylangene	0.22
26	Longifolene	0.20
27	α- copaene	0.19
28	E-α- bisabolene	0.18
29	Cuparene	0.17
30	Neryl acetate	0.16
31	Spathulenol	0.15
32	allo-aromadendrene	0.13
32	β-caryophyllene	0.12
34	Limonene	0.12
35	Z- β-ocimene	0.12
36	p-cymene	0.10
37	Germacrene D	0.07
Total		95.22