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Li‐Kang Zhang
Li‐Kang Zhang
Merck & Co.
Chemistry
Chromatography
Analytical chemistry
Impurity
Electrospray ionization
5
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19
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Unusual (+/-)-electrospray ionization induced fragmentation: Structural elucidation of an in-process synthetic intermediate of doravirine (MK-1439) using liquid chromatography/high-resolution tandem mass spectrometry and two-dimensional nuclear magnetic r: Unusual MS fragmentation of a doravirine impurity
2017
Rapid Communications in Mass Spectrometry
Huaming Sheng
Katrina W. Lexa
Li‐Kang Zhang
Rong-Sheng Yang
Timothy J. Wright
Benjamin D. Sherry
Roy Helmy
Gary E. Martin
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Citations (1)
Mechanistic Study of the Gas-Phase In-Source Hofmann Elimination of Doubly Quaternized Cinchona-Alkaloid Based Phase-Transfer Catalysts by (+)-Electrospray Ionization/Tandem Mass Spectrometry
2017
Journal of the American Society for Mass Spectrometry
Rong-Sheng Yang
Huaming Sheng
Katrina W. Lexa
Edward C. Sherer
Li‐Kang Zhang
Bangping Xiang
Roy Helmy
Bing Mao
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Citations (6)
Characterization of impurities of HIV NNRTI Doravirine by UHPLC-high resolution MS and tandem MS analysis.
2016
Journal of Mass Spectrometry
Li‐Kang Zhang
Ross Yang
Huaming Sheng
Roy Helmy
Jinjian Zheng
Yang Cao
Donald R. Gauthier
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Citations (4)
Applications of TiCl3 as a Diagnostic Reagent for the Detection of Nitro- and N-Oxide-Containing Compounds as Potentially Mutagenic Impurities Using Ultrahigh-Performance Liquid Chromatography Coupled with High-Resolution Mass Spectrometry
2016
Organic Process Research & Development
Rong-Sheng Yang
Adam Beard
Huaming Sheng
Li‐Kang Zhang
Roy Helmy
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Citations (8)
Mass Spectral Interpretation
2014
Li‐Kang Zhang
Birendra N. Pramanik
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