Isomeric reagent tags for differential mobility spectrometry
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United States of America Patent
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Aug 10, 2021
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Nov 15, 2018
app pub date -
Nov 29, 2016
filing date -
Nov 30, 2015
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Abstract
Methods and systems for separating and/or quantifying compounds, using differential mobility spectrometry (DMS) are provided herein. In accordance with various aspects of the applicants' teachings, the methods and systems can provide for the quantification of one or more compounds, for example, using isomeric labels that can be less costly to produce relative to conventional tags that incorporate stable-isotope labels. The present teachings can quantify the relative amount of a compound based on the effect of using an easily charged functional group as well as a functional group positioned at a resonant or non-resonant position through a DMS. In some aspects, methods and systems in accordance with various aspects of the present teachings provide for the detection and/or quantification of the analytes labeled with isomeric tags that can be differentiated via a DMS upstream of a first stage mass analyzer and/or prior to fragmentation of the labeled analyte, for example.
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