Use of liquid chromatography–atmospheric pressure chemical ionization-ion trap mass spectrometry for identification of oleanolic acid and ursolic acid inAnoectochilus roxburghii (wall.) Lindl

2007 ◽  
Vol 42 (7) ◽  
pp. 910-917 ◽  
Author(s):  
Liying Huang ◽  
Tianwen Chen ◽  
Zhao Ye ◽  
Guonan Chen
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