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Cerno Bioscience is pleased to announce a special live webcast on September 27, 2018 at 11 am EDT (GMT-4:00) titled:

“Untargeted Small Molecule Formula ID Using Orbitrap MS with Restricted Spectral Accuracy”

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Event Summary

In this webinar, our guest presenter, Robert J. Strife (Procter & Gamble, Ret.), will present an innovative approach for using spectral accuracy to obtain “breakout” unknown formula ID using restricted spectral accuracy.  Recently published in J. Mass Spec, this simple approach utilizes Cerno’s patented lineshape calibration technology to accurately characterize the A+2 fine structure to provide definitive elemental composition determination.
Even at resolutions greater than 240,000 m/z and mass accuracy of 2 ppm, unambiguous identification of untargeted compounds using accurate mass alone is not possible.  Accurate mass search produces a list of formula candidates which must be tediously evaluated to provide unambiguous results.  One approach to refine the list is to evaluate the isotope ratio between A, A+1, A+2, etc.  A more rigorous approach is to calibrate the profile mode spectrum to a defined analytical lineshape and use spectral accuracy to rank the candidate list.  But even this approach still cannot always provide an unambiguous answer.
Dr. Strife will outline the current methods of unknown formula ID and demonstrate how to optimize your orbitrap to provide optimum results using this new method of restricted spectral accuracy. The method is quick and simple and produces highly confident results. Analysis from a number of small molecule studies will be presented and compared to other, less robust methods.

About the Presenter

Robert J. Strife was Senior Scientist at Procter & Gamble for almost 35 years and has over 27 peer reviewed publications on MS.  He received his BS in Chemistry from Rensselaer Polytechnic Institute and his PhD in Medicinal Chemistry & Pharmacognosy from Purdue University.  Bob was a Post Doc at U. of Colorado Health Sciences Center and a Research Fellow at the Mayo Clinic.

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