Structure of muramic acid TMS derivative mass spectrum's base ion (m/z=185) used for quantification of bacterial peptidoglycan.


The use of trimethylsilyl (TMS)-derivatisation for determining muramic acid in environmental and clinical samples by gas chromatography-mass spectrometry provides high detection sensitivity; however, questions have been raised as concerns the chemical structure of the entity giving the strong signal of m/z 185. In the present communication we present… (More)


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