Preliminary Studies on Liquiritin, Deoxyschizandrin, and Tanshinone II A as Potential Anti-Neurodegenerative Disease Agent: Determination by Reverse-Phase Liquid Chromatography in Tianwang Buxin Pills

Table 5

The repeatability test results (n = 6).

Number	Concentration (mg/g)
	Liquiritin	Deoxyschizandrin	Tanshinone II A
1	0.142	0.132	0.309
2	0.145	0.129	0.311
3	0.141	0.126	0.315
4	0.139	0.126	0.310
5	0.14	0.131	0.302
6	0.138	0.127	0.299
Average	0.141	0.129	0.308
RSD (%)	1.76	2.00	1.95