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Reference.org
Fragmentation (mass spectrometry)
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<p>In mass spectrometry, fragmentation is the <a href="/facts/Dissociation_(chemistry)/gDRGdeSN">dissociation</a> of energetically unstable molecular ions formed from passing the molecules <a href="/facts/Mass_spectrum/Dzqjn1rj">mass spectrum</a>. These reactions are well documented over the decades and fragmentation patterns are useful to determine the molar weight and structural information of unknown molecules. Fragmentation that occurs in tandem mass spectrometry experiments has been a recent focus of research, because this data helps facilitate the identification of molecules. </p>