A high-performance liquid chromatography with electrochemical detection for the determination of total hypericin in extracts of St. John's wort

2006 ◽  
Vol 17 (3) ◽  
pp. 162-167 ◽  
Author(s):  
Ulla Rückert ◽  
Karin Eggenreich ◽  
Werner Likussar ◽  
Reinhold Wintersteiger ◽  
Astrid Michelitsch
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