Analysis of Flavone C-Glycosides in the Leaves of Clinacanthus nutans (Burm. f.) Lindau by HPTLC and HPLC-UV/DAD

Table 2

Intra- and interday precision, recovery, and accuracy data.

Compound	Precision (RSD % RT, AUC)			Recovery
	Concentration (g/mL)	Intraday; ()	Interday; ()	Amount added (g/mL)	Recovery (%)	RSD (%)
Shaftoside	5	3.24	2.80	5	95.33	2.18
	10	2.96	2.11	10	102.10	3.49
	20	0.85	3.39	20	95.50	0.74
Orientin	5	3.24	2.94	5	105.13	1.43
	10	2.96	1.92	10	99.53	1.03
	20	0.85	3.08	20	98.11	0.10
Isovitexin	5	1.55	0.96	5	101.97	2.93
	10	4.18	2.43	10	97.67	3.53
	20	0.70	3.29	20	96.49	0.53
Vitexin	5	2.38	2.11	5	102.61	1.25
	10	3.11	4.54	10	101.50	2.10
	20	0.62	3.48	20	95.52	1.43

AUC: area under curve.