% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Fresnais:178903, author = {M. Fresnais and S. Karabulut and Y. Abou Zeed and J. Ungermann and J. Benzel$^*$ and K. W. Pajtler$^*$ and S. M. Pfister$^*$ and W. E. Haefeli and J. Burhenne and R. Longuespée}, title = {{I}mportant {R}equirements for the {S}election of {I}nternal {S}tandards during the {D}evelopment of {D}esorption/{I}onization {A}ssays for {D}rug {Q}uantification in {B}iological {M}atrices-{A} {P}ractical {E}xample.}, journal = {Molecules}, volume = {27}, number = {3}, issn = {1420-3049}, address = {Basel}, publisher = {MDPI}, reportid = {DKFZ-2022-00334}, pages = {690}, year = {2022}, abstract = {Desorption/ionization mass spectrometry (DI-MS) approaches allow for the rapid quantification of drugs in biological matrices using assays that can be validated according to regulatory guidelines. However, specific adaptations must be applied to create reliable quantification methods, depending on the approach and instrumentation used. In the present article, we demonstrate the importance of the molecular weight, the fragmentation pattern, and the purity of the internal standard for the development of matrix-assisted laser desorption/ionization (MALDI)-ion mobility (IM)-tandem MS and MS/MS methods. We present preliminary results of method development for the quantification of selinexor in microdialysis fluids with a stable isotopically labeled internal standard. In addition, we discuss the selection of internal standards for MALDI-MS assays using different instrumentations.}, keywords = {Biological Assay / Chromatography, Liquid: methods / Mass Spectrometry: methods / Molecular Weight / Pharmaceutical Preparations: chemistry / Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization: methods / Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization: standards / Tandem Mass Spectrometry: methods / biological matrices (Other) / desorption/ionization (Other) / drug (Other) / mass spectrometry (Other) / quantification (Other) / Pharmaceutical Preparations (NLM Chemicals)}, cin = {B062 / HD01}, ddc = {540}, cid = {I:(DE-He78)B062-20160331 / I:(DE-He78)HD01-20160331}, pnm = {312 - Funktionelle und strukturelle Genomforschung (POF4-312)}, pid = {G:(DE-HGF)POF4-312}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:35163955}, pmc = {pmc:PMC8838468}, doi = {10.3390/molecules27030690}, url = {https://inrepo02.dkfz.de/record/178903}, }