Chemical Fingerprint Analysis for Discovering Markers and Identifying Saussurea involucrata by HPLC Coupled with OPLS-DA

Table 2

Method validation.

No.	Precision (RSD, %)		Repeatability (RSD, %)		Stability (RSD, %)
	Retention time	Peak area	Retention time	Peak area	Retention time	Peak area
1	0.84	1.47	0.22	2.72	1.13	2.38
2	0.65	0.98	0.19	2.46	0.86	1.63
3	0.54	0.54	0.16	1.42	0.68	0.65
4	0.41	1.25	0.13	0.97	0.39	1.06
5	0.36	2.40	0.09	2.60	0.41	1.99
6	0.30	2.34	0.08	2.37	0.28	3.57
7	0.08	1.82	0.03	1.27	0.08	1.48
8	0.01	2.65	0.02	2.10	0.01	2.37
9	0.03	1.42	0.02	2.43	0.02	1.07