What is it about?
Mass spectra of H-shaped C80 tetraacids and some of their methylated derivatives were obtained using electron impact, atmospheric pressure chemical ionisation and electrospray ionisation (ESI) mass spectrometry. Multistage ESI mass spectrometry was used to following fragmentation. 13C stable isotope data of the tetraacids showed that they were not derived from microbes that utilised methane.
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Why is it important?
A number of different mass spectrometry techniques can be used to analyse H-shaped tetraacids, so it is useful to have reference spectra. Where related novel compounds are encountered this information helps to identify them. The stable isotope data helps narrow the potential source for these interesting chemicals.
Perspectives
As we often find, when you start to characterise a whole extract, some of the most interesting information is held in the low abundance components. Hence, we were able to identify some new C80 H-shaped tetraacids for the first time.
Dr Paul A Sutton
University of Plymouth
Read the Original
This page is a summary of: Mass spectrometry of polycyclic tetracarboxylic ('ARN') acids and tetramethyl esters, Rapid Communications in Mass Spectrometry, October 2010, Wiley,
DOI: 10.1002/rcm.4761.
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