Table 2.

Chemical composition of C. zeylanicum methanolic extract determined by GC/MS.

Peak No.	Compound	RI a	Area (%)
1.	α-pinene	923	0.8
2.	Camphene	943	0.8
3.	Cis-ocimene	1,031	0.4
4.	Linalool	1,102	0.4
5.	(Z)-3-Phenylacrylaldehyde	1,215	0.3
6.	Cinnamaldehyde	1,262	90.3
7.	trans-cinnamyl acetate	1,276	2.1
8.	α-Copaene	1,365	0.6
9.	(E)-Caryophyllene	1,422	0.5
10.	Humulene	1,428	0.1
11.	α-Calacorene	1,547	0.5
12.	6-Phenyl-3,5-hexadien-2-one	1,651	0.7
13.	trans-Ethyl p-methoxycinnamate	1,762	1.6
	Total		99.1

^aRetention index.