Structure Characterization of Low Molecular Weight Target Analytes—Electron Ionization

Mass Spectrometry in Sports Drug Testing Characterization of Prohibited Substances and Doping Control Analytical Assays, By Mario Thevis Copyright 2010 John Wiley Sons, Inc. 

Structural features, in particular an aromatic ring system and a (substituted) amino or amide function (Fig. 3.1). 

A major theoretical argument for this fragmentation behavior has been the great stability of the generated onium ion however, the discrepancy that the loss of the smaller radical might yield the thermodynamically favored products has not always been considered. Primary 

TABLE 3.1 Characteristic Fragment Ions of Selected Stimnlants with and withont Derivatization Using EE 

Due to the fact that cocaine is considerably metabolized after administration, its major degradation products (eegonine, benzoylecgonine. 

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