Qualitative and quantitative analysis of quaternary ammonium alkaloids from Rhizoma Corydalis by matrix-assisted laser desorption/ionization Fourier transform mass spectrometry coupled with a selective precipitation reaction using Reinecke salt

2006 ◽  
Vol 555 (2) ◽  
pp. 269-277 ◽  
Author(s):  
Zhi-hong Cheng ◽  
Yin-long Guo ◽  
Hao-yang Wang ◽  
Guo-qiang Chen
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