Structure of MURAMIC ACID (cas 1114-41-6) TMS derivative mass spectrum's base ion (m/z=185) used for quantification of bacterial peptidoglycan

Add time:08/16/2019    Source:sciencedirect.com

The use of trimethylsilyl (TMS)-derivatisation for determining MURAMIC ACID (cas 1114-41-6) 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 evidence that this entity results from the formation of a lactam structure of muramic acid upon derivatisation.

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