Mass spectrometry of ozonides

1969 ◽  
Vol 47 (6) ◽  
pp. 919-934 ◽  
Author(s):  
J. Castonguay ◽  
M. Bertrand ◽  
J. Carles ◽  
S. Fliszár ◽  
Y. Rousseau
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectra ◽  
Mass Spectrometric ◽  
Fragment Ions ◽  
Spectrometric Identification ◽  
Mass Spectrometric Identification ◽  
Fragmentation Patterns

The mass spectra of some ozonides are reported, and the modes of formation of the major fragment ions tentatively described. The use of 18O-labelled compounds has proven to be useful in establishing fragmentation patterns. It is concluded that these follow a characteristic path, which is common to all the ozonides studied and permits mass spectrometric identification.

Enhancing the mass spectrometric identification of membrane proteins by combining chemical and enzymatic digestion methods

2015 ◽  
Vol 7 (17) ◽  
pp. 7220-7227 ◽  
Author(s):  
Johanna M. Smeekens ◽  
Weixuan Chen ◽  
Ronghu Wu
Keyword(s):  
Mass Spectrometry ◽  
Membrane Proteins ◽  
Membrane Protein ◽  
Protein Analysis ◽  
Enzymatic Digestion ◽  
Mass Spectrometric ◽  
Spectrometric Identification ◽  
Mass Spectrometric Identification ◽  
Digestion Methods

Combining chemical and enzymatic digestion methods proved to be extremely effective for mass-spectrometry (MS)-based membrane protein analysis.

Mechanism and structure in chemical ionization mass spectrometry: tricyclic flavanoid compounds

1973 ◽  
Vol 26 (7) ◽  
pp. 1577 ◽  
Author(s):  
JW Clark-Lewis ◽  
CN Harwood ◽  
MJ Lacey ◽  
JS Shannon
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectra ◽  
Chemical Ionization ◽  
Ionization Mass Spectrometry ◽  
Chemical Ionization Mass Spectrometry ◽  
Ionization Mass ◽  
Fragmentation Pathways ◽  
Fragment Ions ◽  
Metastable Ions ◽  
Fragmentation Patterns

The chemical ionization mass spectra of a series of tricyclic flavanoid compounds have been examined using isobutane and hydrogen as reagent gases and the fragmen- tation modes have been correlated systematically in terms of structure. The technique produces simple fragmentation patterns and abundant metastable ions. The use of deuterium as reagent gas reveals the influence of extraneous water on the spectra and facilitates the interpretation of the fragmentation pathways. The fragment ions appear to arise from isomeric progenitors protonated at different sites in the molecules.

Stoffwechselprodukte von Mikroorganismen, 146 Massenspektrometrische Identifizierung von 3-Cyclohexenylglycin im Kulturfiltrat von Streptomyces tendae / Metabolic Products of Microorganisms, 146 Mass Spectrometric Identification of 3-Cyclohexenylglycine from Streptomyces tendae

1975 ◽  
Vol 30 (7-8) ◽  
pp. 626-628 ◽  
Author(s):  
W. A. König ◽  
H. Hagenmaier ◽  
U. Dähn
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Mass Spectrometric ◽  
Gas Chromatography Mass Spectrometry ◽  
Culture Filtrates ◽  
Chromatography Mass Spectrometry ◽  
Spectrometric Identification ◽  
Metabolic Products ◽  
Mass Spectrometric Identification ◽  
Streptomyces Tendae

From the culture filtrates of Streptomyces tendae (Tü 901) a ninhydrin positive substance was isolated, which was identified as 3-cyclohexenylglycine by gas chromatography-mass spectrometry of some volatile derivatives.

High Sensitivity in CID Mass Spectrometry, Structure Analysis of Pyrolysis Fragments

1980 ◽  
Vol 35 (1-2) ◽  
pp. 6-11 ◽  
Author(s):  
G. J. Louter ◽  
P. F. M. Stalmeier ◽  
A. J. H. Boerboom ◽  
J. Haverkamp ◽  
J. Kistemaker
Keyword(s):  
Mass Spectrometry ◽  
Simultaneous Detection ◽  
High Sensitivity ◽  
Kinetic Energy Release ◽  
Mass Spectrometric ◽  
Collision Induced Dissociation ◽  
Pyrolysis Products ◽  
Fragment Ions ◽  
Fragment Spectrum ◽  
Mass Spectrometric Identification

Abstract Collision Induced Dissociation (C ID),C ollisional Activation (CA), Pyrolysis, Mycobacterium, Mass Spectrometry An apparatus is described for Collision Induced Dissociation Mass Spectrometry, where es­ sential increase in sensitivity in the detection of the fragment spectrum is obtained by simultaneous detection. Decrease in resolution due to kinetic energy release on dissociation is prevented by post-acceleration of the fragment ions. The instrument was used to investigate the structure of the mass m/z= 59 com pound in the pyrolysis products of Mycobacterium cells. This mass is a key mass in the pyrolysis mass spectrometric identification of dangerous mycobacterial strains.

scholarly journals Mass Spectrometric Identification of Increased C16 Ceramide Levels During Apoptosis

1999 ◽  
Vol 274 (43) ◽  
pp. 30580-30588 ◽  
Author(s):  
Rexford L. Thomas ◽  
Christopher M. Matsko ◽  
Michael T. Lotze ◽  
Andrew A. Amoscato
Keyword(s):  
Mass Spectrometric ◽  
Spectrometric Identification ◽  
Mass Spectrometric Identification
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