Cleavage of photochromic compounds derived from heterocycles under electrospray tandem mass spectrometry: study of the influence of the heteroatom in fragmentation mechanisms

2010 ◽  
Vol 24 (14) ◽  
pp. 2171-2174 ◽  
Author(s):  
M. Manuel Oliveira ◽  
Luís H. M. Carvalho ◽  
Francisco Pereira Peixoto ◽  
Ana M. F. Oliveira-Campos ◽  
Ana Reis ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Tandem Mass ◽  
Electrospray Tandem Mass Spectrometry ◽  
Photochromic Compounds ◽  
Mass Spectrometry Study ◽  
Fragmentation Mechanisms

Investigation of the structural characterization and reversible oxygenation mechanism of oxygenated cobalt–3-(4-thiazolyl)-l-alanine and cobalt–histidine complexes using electrospray tandem mass spectrometry

2016 ◽  
Vol 8 (2) ◽  
pp. 409-417 ◽  
Author(s):  
Jihong Fu ◽  
Pei Fu ◽  
Fan Yue ◽  
Xulong Zhang ◽  
Jide Wang ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Structural Characterization ◽  
Tandem Mass ◽  
Electrospray Tandem Mass Spectrometry ◽  
Esi Ms ◽  
Fragmentation Mechanisms

A new ESI-MS method was developed to identify oxygenated species in Co–Tza formed by the uptake of dioxygen. The structures and fragmentation mechanisms of Co–Tza and Co–His were deduced.

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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