multiple reaction monitoring

A multistage/mass spectrometry (MS/MS) experiment that uses two sequential stages of independent mass analysis. In the product ion MS/MS scan, a precursor ion is selected by mass with the first mass analyser, and the fragment ions formed by collision-induced dissociation are measured with a scan of the second mass analyser and recorded in a mass spectrum.
In an analogy to selected ion monitoring, if both mass analysers in an MS/MS instrument are set on a specific mass, the signal represents the precursor-to-product ion transition for a specific ion pair and is termed reaction monitoring. If several different precursor–product ion pairs are monitored, as is the norm, the analysis is termed multiple reaction monitoring.

单词	multiple reaction monitoring
释义	multiple reaction monitoring multiple reaction monitoring A multistage/mass spectrometry (MS/MS) experiment that uses two sequential stages of independent mass analysis. In the product ion MS/MS scan, a precursor ion is selected by mass with the first mass analyser, and the fragment ions formed by collision-induced dissociation are measured with a scan of the second mass analyser and recorded in a mass spectrum. In an analogy to selected ion monitoring, if both mass analysers in an MS/MS instrument are set on a specific mass, the signal represents the precursor-to-product ion transition for a specific ion pair and is termed reaction monitoring. If several different precursor–product ion pairs are monitored, as is the norm, the analysis is termed multiple reaction monitoring. AcronymsSeeMRM
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