Quantitative Determination of Marker Compounds and Fingerprint Analysis of the Seeds of Vernonia anthelmintica

Table 2

Retention time, regression equation, and linear range of three marker compounds.

Compounds	(min)	Regression equation	Linear range (μg/μL)	R^2
3,4-CQA	23.92	y = 2520181.57X − 2996.82	0.011–0.110	0.9999
3,5-CQA	26.92	y = 3625124.51X − 29075.73	0.137–1.365	0.9999
4,5-CQA	36.91	y = 3624350.26 − 11314.32	0.033–0.325	0.9999