Chiral Capillary Electrophoresis In Current Pharmaceutical And Biomedical Analysis

The scientific monograph by the author Peter Mikus entitled "Chiral Capillary Electrophoresis in Current Pharmaceutical and Biomedical Analysis" provides a comprehensive view on the advanced capillary electrophoresis techniques aimed to current chiral bioanalysis. The advances in the chiral electrophoresis analytical approaches are divided and theoretically described in three sections involving (i) advanced chiral separations for the optimization of chiral resolution (separation mechanisms; electrophoresis techniques in capillary and microchip format; electrophoretic modes such as ITP, CZE/EKC, CEC; chiral additives / pseudophases / phases), (ii) advanced sample preparation for the on-line preconcentration, sample clean-up and analyte derivatization (implementation of electrophoretic effects such as stacking; non-electrophoretic effects such as SPE, chromatography, dialysis; combinations of these effects; multidimensional CE systems; instrumental schemes), (iii) advanced combinations of detection and electrophoresis for the optimization in qualitative and quantitative evaluation (the most important universal as well as selective detection approaches such as absorption and fluorescence spectrophotometry, electrochemical detection, mass spectrometry vs. (i) and/or (ii)). Real analytical potential (benefits and limitations) of these advanced analytical approaches is emphasized by selected performance parameters of the methods and illustrated by many current practical applications including chiral analyses of drugs, their (bio)degradation products and biomarkers in pharmaceutical and biological matrices. The author wishes the readers many inspirations in the creation of new innovative approaches in the field of advanced chiral electrophoresis techniques with the aim to overcome capabilities of the current analytical techniques.

The book describes the theory and applications of Capillary Electrophoresis (CE) in the field of pharmaceutical and biomedical analysis. It is targeted towards users who are intimately involved in analytical problems, especially those which involve small samples. This book presents the technique of capillary electrophoresis from the point of view of the serious hands-on use in the field of pharmaceutical and biomedical analysis. An overview of general theory is presented to acquaint the novice with the fundamental principles. A more theoretical approach is taken in the presentation of electrokinetic chromatography. The next chapter discusses advances in column technologies, the preceding chapters having provided a foundation as to how separations occur. In the next three chapters, recognized experts in their fields present fundamentals and state-of-the-art techniques in the areas of optical, electrochemical and mass spectrometric detection. The major focus of the remaining chapters is on applications. This includes the analysis of pharmaceuticals, amino acids and peptides, macromolecules, nucleosides, nucleotides and oligonucleotides. The use of CE for analysis of small ions and separation of biological particles is also discussed. The issue of sample preparation for analysis by CE is addressed, especially as it relates to clinical analysis.

Covers the Fundamentals of Chiral Separation, Available Chiral Selectors, and Numerous Applications of Chiral Separation by Capillary Electrophoresis Since the 1980s, modern analytical tools have enabled capillary electrophoresis to become a standard part of the chemist’s toolkit. With contributions from international experts, Chiral Separations by Capillary Electrophoresis provides a general overview of the principles of chiral separation by capillary electrophoresis and the different chiral selectors available. The book discusses the most important as well as several new chiral selectors used in capillary electrophoresis. It reviews recent pharmaceutical and biomedical applications and explores novel techniques, such as capillary electrophoresis coupled to mass spectrometry and microchip technology. The book also examines the quantitative aspects of capillary electrophoresis, the possibilities of capillary electrochromatography, and the various chiral columns available. Capillary electrophoresis has proven to be an effective tool for chiral separation. This book explains how this technique can be used in the separation of molecules, offering insight into both existing and emerging applications.

Capillary electrophoresis (CE) is a powerful analytical technique that is widely used in research and development and in quality control of pharmaceuticals. Many reports of highly efficient separations and methods have been published over the past 15 years. CE offers several advantages over high-pressure or high-performance liquid chromatography (HPLC). These include simplicity, rapid analysis, automation, ruggedness, different mechanisms for selectivity, and low cost. Moreover, EC requires smaller sample size and yet offers higher efficiency and thus greater resolution power over HPLC. These characteristics are very attractive in research and development, even more so in pharmaceutical quality control (QC) and stability monitoring (SM) studies. This book will provide busy pharmaceutical scientists a complete yet concise reference guide for utilizing the versatility of CE in new drug development and quality control. - Provides current status and future developments in CE analysis of pharmaceuticals. - Explains how to develop and validate methods. - Includes major pharmaceutical applications including assays and impurity testing.

Capillary electrophoresis (CE) has become an established method with widespread recognition as an analytical technique of choice in numerous analytical laboratories, including industrial and academic sectors. Pharmaceutical and biochemical research and quality control are the most important CE applications. This book provides a comparative assessment of related techniques on mode selection, method development, detection, and quantitative analysis and estimation of pharmacokinetic parameters and broadens the understanding of modern CE applications, developments, and prospects. It introduces the fundamentals of CE and clearly outlines the procedures used to mitigate several barriers, such as detection limits, signal detection, changing capillary environment, resolution separation of analytes, and hyphenation of mass spectrometry with CE, for a range of analytical problems. Each chapter outlines a specific electrophoretic variant with detailed instructions and some standard operating procedures. In this respect, the book meets its desired goal of rendering assistance to lovers of electrophoresis.

This volume reflects the changes that have taken place in the pharmaceutical industry over the last ten years, most notably the increased importance attached to the question of chirality, the growing influence of biotechnology and the need for more rigorous documentation and validation of analytical methods and procedures. The first part of this book deals with the application of new technology to pharmaceutical and biomedical analysis, reflecting the present needs for increased speed, sensitivity and selectivity in the analysis of drugs. The second chapter provides an overview of capillary electophoresis, which represents one of the most inportant analytical developments to impact directly on pharmaceutical development in recent years. Although not a chromatographic technique, capillary electrophoresis was considered too important to be ignored. Over the last 25 years, liquid chromatography has grown into a mature analytical technique and many of the fundamental issues concerned with retention and separation are well defined. The practitioners of modern liquid chromatography spend as much time in the development of techniques for sampling handling and automation as they do in the development of the separation. Therefore, Part Two of this book describes some of the recent advances in the areas of sample handling and the isolation of compounds from biological samples, including solid phase extraction, restricted access media for direct injection, coupled column technology and microdialysis. Similarily, Part Three contains two chapters concerned with liquid chromatographic methods for the isolation of drug substances, peptides and proteins from other complex media. The pharmaceutical industry and the process of drug development are highly regulated and the increasing importance that the regulatory authorities attach to validation has had a significant impact on the analytical techniques used for the analysis of drugs. Although this has increased the workload of analysts in the pharmaceutical industry, it has also improved the quality of analytical methods used in the support of investigational and new drug applications as well as the quality of methods published more recently in the literature. Consequently, Part Four of this volume describes approaches to the optimization and validation of liquid chromatography methods for the analysis of drugs in the bulk form, in pharmaceutical formulations and biological fluids.

Dieser erste Titel einer ganzen Serie von anwendungsbezogenen Handbüchern zur Kapillarelektrophorese beschäftigt sich mit der Analytik von pharmazeutischen Substanzen. Dabei werden verschiedene Techniken praxisnah erläutert. Jeder, der im Labor - ob wissenschaftlich oder praxisnah - mit der Analyse von oft chiralen Pharmazeutika konfrontiert ist, wird viele Hinweise und Tips für seine Arbeit finden.USP: Einzige Monographie zur Analyse von Pharmazeutika mit CE This book describes the current state of the art for the analysis of pharmaceuticals by capillary electrophoresis and contains several hundred references to specific applications and methods. The main purpose of the book is to present the application possibilities of CE an therefore tabulated application data are provided. Chapters of the book are devoted to providing details of individual application areas such as chiral analysis, determination of drug related impurities, determination of drug counter-ions, drug residue monitoring and main component assay. An introductory chapter provides theoretical background to CE an related techniques. A chapter is dedicated to capillary electrochromatography which highlights the importance this technique currently possesses. Successful regulatory acceptance of CE methods is also described. A comprehensive chapter covers method validation aspects. Other chapters include discrete areas such as the use of non-aqueous solvents, forensic applications of CE, the application of experimental designs, determination of drugs in biofluids, and the analysis of vitamins by CE.