Journal of Analytical Methods in Chemistry / 2017 / Article / Tab 3

Research Article

Stereospecific Assay of (R)- and (S)-Goitrin in Commercial Formulation of Radix Isatidis by Reversed Phase High-Performance Liquid Chromatography

Table 3

Contents of (R)- and (S)-goitrin in 9 batches of Banlangen granules ().

Sample(R)-Goitrin 
(mg/g)
Standard deviation 
(mg/g)
(S)-Goitrin 
(mg/g)
Standard deviation 
(mg/g)
R/S ratio

A10.0710.00090.0370.00051.93
A20.2470.00400.1740.00261.42
A30.2090.00190.1830.00181.14
A40.4940.01140.4290.00901.15
A50.2720.00440.1990.00341.37
A60.0790.00080.0560.00051.41
B10.0240.00020.0180.00011.30
B20.0260.00020.0200.00021.33
B30.0390.00040.0300.00031.30

Mean0.1620.1271.37
RSD (%)97.4106.817.0

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