Fragmentation Pathways of Tadalafil and Its Analogues in Electrospray Ionization Tandem Mass Spectrometry

2017 ◽  
Vol 39 (2) ◽  
pp. 190-196 ◽  
Author(s):  
Jung-min Lee ◽  
Jongki Hong ◽  
Han Bin Oh ◽  
Bongjin Moon
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Electrospray Ionization ◽  
Tandem Mass ◽  
Fragmentation Pathways ◽  
Ionization Tandem Mass Spectrometry

Electrospray Ionization Tandem Mass Spectrometry of 3-[4-Bis-N,N-(2-Chloroethyl)Aminophenyl]Acetates of the Estrane Series

2007 ◽  
Vol 13 (3) ◽  
pp. 207-211 ◽  
Author(s):  
V.I. Kadentsev ◽  
A.O. Chizhov ◽  
O.S. Chizhov ◽  
N.G. Kolotyrkina ◽  
A.A. Kutin ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Electrospray Ionization ◽  
Quantum Chemical Calculations ◽  
Functional Groups ◽  
Quantum Chemical ◽  
Tandem Mass ◽  
Simplified Models ◽  
Fragmentation Pathways ◽  
Ionization Tandem Mass Spectrometry

Collision-induced fragmentation of the [M + Na]+ and [M + H]+ ions generated from 3-[4- bis-N,N-(2-chloroethyl)aminophenyl]-acetates in the estrane series under electrospray/ionization was studied. Some regularities in fragmentation pathways depending on the nature of functional groups were established. Formation of the [(M + Na) – NaCl]+ ions along with [(M + Na) – HCl]+ ions from the [M + Na]+ ions was explained using quantum chemical calculations for some simplified models.

Direct sequencing of a disulfide-linked peptide with electrospray ionization tandem mass spectrometry

The Analyst ◽  
2015 ◽  
Vol 140 (8) ◽  
pp. 2623-2627 ◽  
Author(s):  
Gongyu Li ◽  
Jiying Pei ◽  
Yue Yin ◽  
Guangming Huang
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Corona Discharge ◽  
Electrospray Ionization ◽  
Disulfide Bonds ◽  
Direct Sequencing ◽  
Peptide Sequencing ◽  
Tandem Mass ◽  
Esi Ms ◽  
Ionization Tandem Mass Spectrometry

Enhanced corona discharge was employed for in-spray dissociation of disulfide bonds, facilitating disulfide-containing peptide sequencing with ESI-MS/MS.

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