A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes
A series of 11 pairs of substituted pyrazine N-oxides, differing in the substituent position, were examined using electrospray ionization mass spectrometry (ESI-MS) in order to use spectra to assess the differentiation of positional isomers. For each compound, mass spectra were recorded with three d...
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2015
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10765174_v50_n1_p136_Butler http://hdl.handle.net/20.500.12110/paper_10765174_v50_n1_p136_Butler |
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paper:paper_10765174_v50_n1_p136_Butler2023-06-08T16:05:24Z A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes Electrospray Metal complexation Positional isomers Principal component analysis (PCA) Pyrazine N-oxides Electrodeposition Electrospray ionization Isomers Mass spectrometry Metal ions Metals Spectrometry Electrospray ionization mass spectrometry Electrosprays Mass spectra Metal complexation Metal-ion complexes N-Oxides Positional isomers Relative intensity Principal component analysis aluminum calcium ion copper ion metal complex metal ion oxide pyrazine coordination compound copper oxide pyrazine derivative Article complex formation electrospray mass spectrometry isomer molecule principal component analysis priority journal chemistry electrospray mass spectrometry isomerism procedures Aluminum Coordination Complexes Copper Isomerism Oxides Principal Component Analysis Pyrazines Spectrometry, Mass, Electrospray Ionization A series of 11 pairs of substituted pyrazine N-oxides, differing in the substituent position, were examined using electrospray ionization mass spectrometry (ESI-MS) in order to use spectra to assess the differentiation of positional isomers. For each compound, mass spectra were recorded with three different metal cations, namely calcium (II), copper (II) and aluminum (III), with characterization of the observed peaks. Differentiation between regioisomeric N-oxides has been achieved by comparison of the identity and relative intensities of the peaks originating from the adduct ions formed with themetal ions. Principal component analysis (PCA) has been employed to assist in the interpretation of the results obtained with each metal ion, exploring possible trends according to the nature and position of the substituent in the pyrazine N-oxide. Copyright © 2015 John Wiley & Sons, Ltd. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10765174_v50_n1_p136_Butler http://hdl.handle.net/20.500.12110/paper_10765174_v50_n1_p136_Butler |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Electrospray Metal complexation Positional isomers Principal component analysis (PCA) Pyrazine N-oxides Electrodeposition Electrospray ionization Isomers Mass spectrometry Metal ions Metals Spectrometry Electrospray ionization mass spectrometry Electrosprays Mass spectra Metal complexation Metal-ion complexes N-Oxides Positional isomers Relative intensity Principal component analysis aluminum calcium ion copper ion metal complex metal ion oxide pyrazine coordination compound copper oxide pyrazine derivative Article complex formation electrospray mass spectrometry isomer molecule principal component analysis priority journal chemistry electrospray mass spectrometry isomerism procedures Aluminum Coordination Complexes Copper Isomerism Oxides Principal Component Analysis Pyrazines Spectrometry, Mass, Electrospray Ionization |
| spellingShingle |
Electrospray Metal complexation Positional isomers Principal component analysis (PCA) Pyrazine N-oxides Electrodeposition Electrospray ionization Isomers Mass spectrometry Metal ions Metals Spectrometry Electrospray ionization mass spectrometry Electrosprays Mass spectra Metal complexation Metal-ion complexes N-Oxides Positional isomers Relative intensity Principal component analysis aluminum calcium ion copper ion metal complex metal ion oxide pyrazine coordination compound copper oxide pyrazine derivative Article complex formation electrospray mass spectrometry isomer molecule principal component analysis priority journal chemistry electrospray mass spectrometry isomerism procedures Aluminum Coordination Complexes Copper Isomerism Oxides Principal Component Analysis Pyrazines Spectrometry, Mass, Electrospray Ionization A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| topic_facet |
Electrospray Metal complexation Positional isomers Principal component analysis (PCA) Pyrazine N-oxides Electrodeposition Electrospray ionization Isomers Mass spectrometry Metal ions Metals Spectrometry Electrospray ionization mass spectrometry Electrosprays Mass spectra Metal complexation Metal-ion complexes N-Oxides Positional isomers Relative intensity Principal component analysis aluminum calcium ion copper ion metal complex metal ion oxide pyrazine coordination compound copper oxide pyrazine derivative Article complex formation electrospray mass spectrometry isomer molecule principal component analysis priority journal chemistry electrospray mass spectrometry isomerism procedures Aluminum Coordination Complexes Copper Isomerism Oxides Principal Component Analysis Pyrazines Spectrometry, Mass, Electrospray Ionization |
| description |
A series of 11 pairs of substituted pyrazine N-oxides, differing in the substituent position, were examined using electrospray ionization mass spectrometry (ESI-MS) in order to use spectra to assess the differentiation of positional isomers. For each compound, mass spectra were recorded with three different metal cations, namely calcium (II), copper (II) and aluminum (III), with characterization of the observed peaks. Differentiation between regioisomeric N-oxides has been achieved by comparison of the identity and relative intensities of the peaks originating from the adduct ions formed with themetal ions. Principal component analysis (PCA) has been employed to assist in the interpretation of the results obtained with each metal ion, exploring possible trends according to the nature and position of the substituent in the pyrazine N-oxide. Copyright © 2015 John Wiley & Sons, Ltd. |
| title |
A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| title_short |
A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| title_full |
A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| title_fullStr |
A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| title_full_unstemmed |
A mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine N-oxides using metal ion complexes |
| title_sort |
mass spectrometry-based method for differentiation of positional isomers of monosubstituted pyrazine n-oxides using metal ion complexes |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10765174_v50_n1_p136_Butler http://hdl.handle.net/20.500.12110/paper_10765174_v50_n1_p136_Butler |
| _version_ |
1768544924687400960 |