Publications by authors named "Michal Dousa"

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What is the role of current mass spectrometry in pharmaceutical analysis?
Maria Khalikova, Jakub Jireš, Ondřej Horáček, Michal Douša, Radim Kučera

Mass Spectrom Rev· April 2024

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Comprehensive UHPLC-MS screening methods for the analysis of triazolopyrazine precursor and its genotoxic nitroso-derivative in sitagliptin pharmaceutical formulation.
Jakub Jireš, Michal Douša, Petr Gibala, Jan Doubský, Daniel Pěček

J Pharm Biomed Anal· January 2024

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Analytical Quality by Design-Compliant Development of a Cyclodextrin-Modified Micellar ElectroKinetic Chromatography Method for the Determination of Trimecaine and Its Impurities.
Luca Marzullo, Roberto Gotti, Serena Orlandini, Patricie Slavíčková, Jakub Jireš

Molecules· June 2023

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N-Nitrosation in the absence of nitrosating agents in pharmaceuticals?
Jakub Jireš, Michal Douša, Petr Gibala, Tomáš Kubelka

J Pharm Biomed Anal· September 2022

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Nitrites as precursors of N-nitrosation in pharmaceutical samples - A trace level analysis.
Jakub Jireš, Michal Douša

J Pharm Biomed Anal· May 2022

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The determination of two analogues of 4-(azidomethyl)-1,1'-biphenyl as potential genotoxic impurities in the active pharmaceutical ingredient of several sartans containing a tetrazole group.
Jakub Jireš, Petr Gibala, Stanislav Kalášek, Michal Douša, Jan Doubský

J Pharm Biomed Anal· October 2021

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Analytical quality by design in the development of a solvent-modified micellar electrokinetic chromatography method for the determination of sitagliptin and its related compounds.
Benedetta Pasquini, Roberto Gotti, Mercedes Villar-Navarro, Michal Douša, Lapo Renai

J Pharm Biomed Anal· August 2021

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Insight into the formation of N-nitrosodimethylamine in metformin products.
Jakub Jireš, Stanislav Kalášek, Petr Gibala, Jakub Rudovský, Michal Douša

J Pharm Biomed Anal· February 2021

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HILIC-MS determination of dimethylamine in the active pharmaceutical ingredients and in the dosage forms of metformin.
Michal Douša, Jakub Jireš

J Pharm Biomed Anal· November 2020

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Supercritical fluid chromatography in chiral separations: Evaluation of equivalency of polysaccharide stationary phases.
Pavel Jakubec, Michal Douša, Lucie Nováková

J Sep Sci· July 2020

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Detection and structure elucidation of the new degradation impurities in the pharmaceutical formulations of ruxolitinib hydrobromide.
Michal Douša, Jan Doubský, Michaela Gajdošová, Marcela Tkadlecová, Tomáš Martinů

J Pharm Biomed Anal· July 2020

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Quality by Design as a risk-based strategy in pharmaceutical analysis: Development of a liquid chromatography-tandem mass spectrometry method for the determination of nintedanib and its impurities.
Benedetta Pasquini, Serena Orlandini, Sandra Furlanetto, Roberto Gotti, Massimo Del Bubba

J Chromatogr A· January 2020

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Enantioseparation of N-acetyl-dl-cysteine as o-phtaldialdehyde derivatives obtained with various primary aliphatic amine additives on polysaccharide-based chiral stationary phases.
Michal Douša

J Pharm Biomed Anal· March 2019

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Chiral separation of aliphatic primary amino alcohols as o-phthaldialdehyde/mercaptoethanol derivatives on polysaccharide-based chiral stationary phases.
Michal Douša

Chirality· March 2019

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Quantification of 2-aminoisobutyric acid impurity in enzalutamide bulk drug substance using hydrophilic interaction chromatography with fluorescence detection.
Michal Douša

J Pharm Biomed Anal· February 2019

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Identification and structure elucidation of a new degradation impurity in the multi-component tablets of amlodipine besylate.
Petr Gibala, Michal Douša, Aneta Kalužíková, Marcela Tkadlecová, Martin Štefko

J Pharm Biomed Anal· January 2019

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Chiral capillary zone electrophoresis in enantioseparation and analysis of cinacalcet impurities: Use of Quality by Design principles in method development.
Benedetta Pasquini, Serena Orlandini, Mercedes Villar-Navarro, Claudia Caprini, Massimo Del Bubba

J Chromatogr A· September 2018

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The determination of pharmaceutically active thiols using hydrophilic interaction chromatography followed postcolumn derivatization with o-phthaldialdehyde and fluorescence detection.
Michal Douša

J Pharm Biomed Anal· July 2018

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HPLC/UV/MS method application for the separation of obeticholic acid and its related compounds in development process and quality control.
Michal Douša, Markéta Slavíková, Tomáš Kubelka, Josef Černý, Petr Gibala

J Pharm Biomed Anal· February 2018

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Separation of structurally related primary aliphatic amines using hydrophilic interaction chromatography with fluorescence detection after postcolumn derivatization with o-phthaldialdehyde/mercaptoethanol.
Michal Douša, Jan Doubský

J Sep Sci· December 2017

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Esterification of Ibuprofen in Soft Gelatin Capsules Formulations-Identification, Synthesis and Liquid Chromatography Separation of the Degradation Products.
Michal Douša, Ludek Meca, Petr Gibala, Josef Jirman, Marcela Tkadlecová

J Chromatogr Sci· September 2017

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General screening and optimization strategy for fast chiral separations in modern supercritical fluid chromatography.
Lucie Nováková, Michal Douša

Anal Chim Acta· January 2017

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Utilization of Photochemically Induced Fluorescence Detection for HPLC Determination of Genotoxic Impurities in the Vortioxetine Manufacturing Process.
Michal Douša, Jan Doubský, Jan Srbek

J Chromatogr Sci· October 2016

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A novel approach for HPLC determination of 2-cynaoacetamide using derivatization procedure with 2-hydroxyacetophenone as a new useful derivatization reagent.
Michal Douša, Jiří Břicháč, Marcela Tkadlecová, Stanislav Man, Josef Zezula

J Pharm Biomed Anal· September 2016

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Optimization of o-phtaldialdehyde/2-mercaptoethanol postcolumn reaction for the hydrophilic interaction liquid chromatography determination of memantine utilizing a silica hydride stationary phase.
Michal Douša, Veronika Pivoňková, David Sýkora

J Sep Sci· August 2016

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