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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Comparison of electron and chemical ionization mass spectrometry of sialic acids.

Sialic acids were analyzed as per-O-trimethylsilylated compounds by gas-liquid chromatography/ mass spectrometry either on electron or chemical ionization by isobutane. Electron ionization mass spectra of these derivatives are very similar to those of the corresponding methyl esters described earlier whereas chemical ionization mass spectra are characterized in the high mass range by loss of the C-2 and the C-4 substituents from the M + 1 ion. Together with other fragment ions the seven different sialic acids analyzed could be clearly identified.[1]

References

  1. Comparison of electron and chemical ionization mass spectrometry of sialic acids. Reuter, G., Schauer, R. Anal. Biochem. (1986) [Pubmed]
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