Table 1.

HPLC analysis of the methanolic extract of C. arvensis stem.

Peak no.	Compound	Retention time (min)	Area (mV.s)	Area (%)	Amount (ppm)
1	Quercetin	2.813	9.807	0.5	0.51
2	Gallic acid	4.967	34.728	1.7	1.24
3	Caffeic acid	12.880	65.561	3.2	3.13
4	Vanillic acid	13.687	101.001	4.9	6.26
5	p-Coumaric acid	17.380	136.218	6.6	1.56
6	Ferulic acid	22.533	322.329	15.5	23.73
7	Cinnamic acid	24.653	127.464	6.1	4.45