Decomposition of protonated noradrenaline and normetanephrine assisted by NH2 migration studied by electrospray tandem mass spectrometry and molecular orbital calculations

2005 ◽  
Vol 19 (6) ◽  
pp. 743-751 ◽  
Author(s):  
Fran�oise Rogalewicz ◽  
Sophie Bourcier ◽  
Yannik Hoppilliard
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Molecular Orbital ◽  
Molecular Orbital Calculations ◽  
Tandem Mass ◽  
Electrospray Tandem Mass Spectrometry

The (C3H6N)+ cations in the gas phase: ab initio molecular orbital calculations and tandem mass spectrometry experiments

1989 ◽  
Vol 111 (15) ◽  
pp. 5560-5567 ◽  
Author(s):  
Guy Bouchoux ◽  
J. P. Flament ◽  
Y. Hoppilliard ◽  
J. Tortajada ◽  
R. Flammang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Ab Initio ◽  
Gas Phase ◽  
Molecular Orbital ◽  
Molecular Orbital Calculations ◽  
Tandem Mass

[C2H4OS]>·>+> Radical cations derived from alkyl thioformates: tandem mass spectrometry and molecular orbital calculations

1999 ◽  
pp. 821-826 ◽  
Author(s):  
Driss Lahem ◽  
Robert Flammang ◽  
Hung Thanh Le ◽  
Thanh Lam Nguyen ◽  
Minh Tho Nguyen
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Molecular Orbital ◽  
Radical Cations ◽  
Molecular Orbital Calculations ◽  
Tandem Mass

Analysis of Brassinosteroids in Soybean Seeds and Leaves by Liquid Chromatography-Tandem Mass Spectrometry

2017 ◽  
Vol 10 (1) ◽  
pp. 100-109
Author(s):  
Hongxia Li ◽  
Natasha Trzaskalski ◽  
R.J. Neil Emery
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Tandem Mass Spectrometry ◽  
High Performance ◽  
Soybean Seeds ◽  
Tandem Mass ◽  
Electrospray Tandem Mass Spectrometry ◽  
Aqueous Methanol ◽  
Chromatography Tandem Mass Spectrometry ◽  
Liquid Chromatography Tandem Mass

Objective:A simple and fast high performance liquid chromatography-electrospray tandem mass spectrometry (LC-ESI-MS/MS) method has been developed for the analysis of brassinosteroids (BRs) in plants without derivatization.Materials:The BRs (including castasterone, 24-epicastasterone, brassinolide and 24-epibrassinolide) have been extracted with ice cold 80% aqueous methanol solution.Method:Five different purification strategies have been tested for the purification and enrichment of BRs.Conclusion:This analytical method was sensitive, reliable, rapid and applicable to trace analysis in complex plant samples.

Determination of Mildronate in Human Plasma and Urine by UPLC–Positive Ion Electrospray Tandem Mass Spectrometry

2011 ◽  
Vol 73 (7-8) ◽  
pp. 659-665 ◽  
Author(s):  
Li-Jing Cai ◽  
Jun Zhang ◽  
Wen-Xing Peng ◽  
Rong-Hua Zhu ◽  
Jian Yang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Human Plasma ◽  
Tandem Mass ◽  
Electrospray Tandem Mass Spectrometry ◽  
Human Plasma And Urine ◽  
Positive Ion
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