Rapid Screening and Quantitative Determination of Active Components in Qing-Hua-Yu-Re-Formula Using UHPLC-Q-TOF/MS and HPLC-UV

Table 3

Precision and stability of six compounds in QHYRF ().

Components	Precision		Stability RSD (%)
	Intraday RSD (%)	Interday RSD (%)
Danshensu	3.8	2.2	4.7
Paeoniflorin	1.6	1.7	4.2
Acteoside	4.3	1.2	2.8
Lithospermic acid	4.1	1.6	2.8
Salvianolic acid B	4.8	2.1	2.4
Salvianolic acid C	4.7	1.2	3.9