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- W2390438462 abstract "Deacetylcefotaxime is an important derivatives of cefotaxime,it is key problem in the field of cefotaxime industrialization and product quality control.Electrospray ionization multi-stage tandem mass spectrometry is applied to the analysis of fragmentation pathways of deacetylcefotaxime.In this paper,which the influence of the chemical structure on chemical stability was studied.Results indicate that: the m/e:241,m/e:380 and m/e:285 fragments are response better to its particular chemical structure,which can be used as the characteristic fragment;nitrogen atoms of β-lactam ring are not susceptible to be attacked by proton;carboxyl occurs esterification reaction easily,which leads to the unique cracking open loop mode in this compound.This study will provide an important experimental and theoretical basis on the improvement of chemical stability,the research of structure-activity relationships,qualitative and quantitative analysis." @default.
- W2390438462 created "2016-06-24" @default.
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- W2390438462 date "2012-01-01" @default.
- W2390438462 modified "2023-09-23" @default.
- W2390438462 title "Fragmentation pathways and chemical stability of deacetylcefotaxime by electrospray ionization multi-stage tandem mass spectrometry" @default.
- W2390438462 hasPublicationYear "2012" @default.
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