Separation and characterization of unknown impurities in cefonicid sodium by trap-free two-dimensional liquid chromatography combined with ion trap time-of-flight mass spectrometry

2017 ◽  
Vol 31 (18) ◽  
pp. 1541-1550 ◽  
Author(s):  
Jian Wang ◽  
Yu Xu ◽  
Yunfeng Zhang ◽  
Hong Wang ◽  
Weihui Zhong
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