LC-NMR and Other Hyphenated NMR Techniques

LC-NMR and Other Hyphenated NMR Techniques
Author: Maria V. Silva Elipe
Publisher: John Wiley & Sons
Total Pages: 197
Release: 2011-12-20
Genre: Science
ISBN: 1118135385

This practical guide provides a basic overview of the pros and cons of NMR spectroscopy as both a hyphenated and non-hyphenated technique. The book begins with a description of basic NMR concepts for the structural elucidation of organic compounds and then details the historical development of NMR and hyphenated NMR in the structural elucidation world, followed by applications of hyphenated NMR as LC-NMR and LC-MS-NMR in industry and academia. It also contains updated information on the latest advancements and applications of LC-NMR in such areas as degradation products, drug metabolism, food analysis, and drug discovery. An essential resource for scientists in industry and academia who work in the areas of organic chemistry, medicinal chemistry, process chemistry, and analytical chemistry.

LC-NMR

LC-NMR
Author: Nina C. Gonnella
Publisher: CRC Press
Total Pages: 299
Release: 2013-03-15
Genre: Science
ISBN: 1439875073

The isolation and structural characterization of substances present at very low concentrations, as is necessary to satisfy regulatory requirements for pharmaceutical drug degradants and impurities, can present scientific challenges. The coupling of HPLC with NMR spectroscopy has been at the forefront of cutting-edge technologies to address these is

High Performance Liquid Chromatography in Phytochemical Analysis

High Performance Liquid Chromatography in Phytochemical Analysis
Author: Monika Waksmundzka-Hajnos
Publisher: CRC Press
Total Pages: 998
Release: 2010-11-08
Genre: Health & Fitness
ISBN: 1420092618

The powerful, efficient technique of high performance liquid chromatography (HPLC) is essential to the standardization of plant-based drugs, identification of plant material, and creation of new herbal medicines. Filling the void in this critical area, High Performance Liquid Chromatography in Phytochemical Analysis is the first book to give a comp

On-line LC-NMR and Related Techniques

On-line LC-NMR and Related Techniques
Author: Klaus Albert
Publisher: Wiley
Total Pages: 306
Release: 2002-08-30
Genre: Science
ISBN: 9780471496496

This book gives a comprehensive overview of the basis and the current applications of LC-NMR and related techniques. It deals with the practical aspects of the hardware and software set-up for a successful performance of on-line coupling experiments. It covers the solution of real-word problems from the fields of biomedical, pharmaceutical and environmental studies as well as the analysis of natural products and polymeric compounds. Thus guidelines for an efficient application of the powerful hyphenated technique LC-NMR in combination with LC-MS are presented. Besides LC-NMR, important techniques such as the on-line coupling of gel permeation chromatography and supercritical fluid chromatography, together with 1H NMR spectroscopy, are described in detail. Fascinating further aspects, such as the application of capillary separation techniques either in the single or parallel detection mode, together with the possibilities of direct 13C monitoring of chromatographic events, are also discussed. Key features include: * Up-to-date information on the theoretical and experimental methodology * Coverage of applications in biomedical, pharmaceutical and natural product analysis, as well as environmental polymer and related hyphenated techniques * Information appropriate for researchers in organic, pharmaceutical and medical chemistry Overall, this book is a requirement for all researchers and staff members dealing with structure elucidation problems in separation science.

Integrated Drug Discovery Technologies

Integrated Drug Discovery Technologies
Author: Houng-Yau Mei
Publisher: CRC Press
Total Pages: 604
Release: 2002-03-19
Genre: Medical
ISBN: 9780203910696

Integrated Drug Discovery Technologies provides a global overview of emerging drug development technologies by presenting and integrating new techniques from the disciplines of chemistry, biology, and computational sciences. It combines integration of contemporary mechanization with strategies in drug delivery. Topics include: target identification and validation, functional genomics, microfabrication techniques, integrated proteomics technologies, high throughput screening, fluorescence correlation spectroscopy methods, and screening lead compounds in the post-genomic era.

Liquid Chromatography

Liquid Chromatography
Author: J.-L. Wolfender
Publisher: Elsevier Inc. Chapters
Total Pages: 49
Release: 2013-01-08
Genre: Science
ISBN: 0128071435

Nuclear magnetic resonance spectroscopy (NMR) provides a rich source of structural information which when combined with other spectroscopic data allows structural elucidation of complex compounds as well as a universal detection method for compounds of interest in complex mixtures. NMR is a nondestructive technique that facilitates its coupling with other spectroscopic methods such as mass spectrometry. The key to on-line NMR detection is the design of the flow probe. Suitable probes for continuous flow, stop flow, loop collection, solid-phase extraction, and microflow probes are described emphasizing their general applications and limitations. Sensitivity and probe volume are major limitations of NMR coupling to liquid chromatography. Solvent selection for separations needs to consider the unique characteristics of NMR, for example the use of deuterated solvents for proton detection, and methods available for solvent suppression. Practical applications of LC-NMR are presented to illustrate the use of this technique in different areas of analytical chemistry.

HPLC for Pharmaceutical Scientists

HPLC for Pharmaceutical Scientists
Author: Yuri V. Kazakevich
Publisher: John Wiley & Sons
Total Pages: 1136
Release: 2007-02-16
Genre: Science
ISBN: 0470087943

HPLC for Pharmaceutical Scientists is an excellent book for both novice and experienced pharmaceutical chemists who regularly use HPLC as an analytical tool to solve challenging problems in the pharmaceutical industry. It provides a unified approach to HPLC with an equal and balanced treatment of the theory and practice of HPLC in the pharmaceutical industry. In-depth discussion of retention processes, modern HPLC separation theory, properties of stationary phases and columns are well blended with the practical aspects of fast and effective method development and method validation. Practical and pragmatic approaches and actual examples of effective development of selective and rugged HPLC methods from a physico-chemical point of view are provided. This book elucidates the role of HPLC throughout the entire drug development process from drug candidate inception to marketed drug product and gives detailed specifics of HPLC application in each stage of drug development. The latest advancements and trends in hyphenated and specialized HPLC techniques (LC-MS, LC-NMR, Preparative HPLC, High temperature HPLC, high pressure liquid chromatography) are also discussed.