Download or read book Spectrophotometric Determination of Aqueous Ionization Constants pKa of Benzimidazoles written by Sonja Schenkeveld and published by . This book was released on 2002 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acid base Behavior in Aprotic Organic Solvents written by Marion Maclean Davis and published by . This book was released on 1968 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt: A unified picture of acid-base behavior in aprotic organic solvents is presented, based on an extensive survey of the literature and experimental results of the author and associates. Evidence given to support this picture includes data pertaining to colligative properties of acids, bases, and salts and also conductance, dielectric constants, distribution between immiscible solvents, and spectral absorption in the infrared, visible, and ultraviolet. The acids upon which attention is centered are proton-donor compounds that are measurably ionized in water, such as aliphatic and aromatic carboxylic acids, substituted phenols and mineral acids. The bases of principal interest are likewise compounds capable of forming ions in water, for example, aliphatic and aromatic amines and derivatives of guanidine or pyridine. The solvents emphasized are hydrocarbons and halohydrocarbons, but data for dipolar aprotic solvents (for example, acetone, acetonitrile, and nitrobenzene) are included. Contrasts in acid-base behavior and in acidity and basicity scales in aprotic and water-like solvents are discussed. The role of hydrogen bonding in aprotic solvents is discussed at length. Important types of hydrogen-bonded structures include chelate rings; self-associated acids, bases, and salts; hydrogen-bonded ion pairs; and homo- and heteroconjugate cations and anions. Examples are given in which hydrogen bonding of these types affects such properties as the absorption spectrum of a salt, the catalytic effect of an acid, and the accurate location of a titration endpoint. (Author).
Download or read book Molecular Interaction Fields written by Gabriele Cruciani and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unique reference source, edited by the world's most respected expert on molecular interaction field software, covers all relevant principles of the GRID force field and its applications in medicinal chemistry. Entire chapters on 3D-QSAR, pharmacophore searches, docking studies, metabolism predictions and protein selectivity studies, among others, offer a concise overview of this emerging field. As an added bonus, this handbook includes a CD-ROM with the latest commercial versions of the GRID program and related software.
Download or read book Hydroxamic Acids written by Satya P. Gupta and published by Springer Science & Business Media. This book was released on 2013-09-30 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satya P. Gupta's Hydroxamics Acids is the first book to compile invited articles written by international experts on the class of compounds hydroxamic acids. Found to possess a wide spectrum of biological activities, the hydroxamic acids are of interest to theoretical and experimental chemists who can study and make use of them in drug design and development. Chapters in this book provide a diverse and comprehensive coverage of this compound class and consequently this publication is a valuable resource for researchers in chemical, pharmaceutical and biological sciences.
Download or read book Free Radical Induced DNA Damage and Its Repair written by Clemens Sonntag and published by Springer Science & Business Media. This book was released on 2006-03-20 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: The free-radical chemistry of DNA had been discussed in some detail in 1987 in my book The Chemical Basis of Radiation Biology. Obviously, the more recent developments and the concomitant higher level of understanding of mechanistic details are missing. Moreover, in the living cell, free-radical DNA damage is not only induced by ionizing radiation, but free-radical-induced DNA damage is a much more general phenomenon. It was, therefore, felt that it is now timely to review our present knowledge of free-radical-induced DNA damage induced by all conceivable free-radical-generating sources. Originally, it had been thought to include also a very important aspect, the repair of DNA damage by the cell’s various repair enzymes. Kevin Prise (Cancer Campaign, Gray Laboratory, L- don) was so kind to agree to write this part. However, an adequate description of this strongly expanding area would have exceeded the allocated space by much, and this section had to be omitted. The directors of the Max-Planck-Institut für Strahlenchemie (now MPI für Bioanorganische Chemie), Karl Wieghardt and Wolfgang Lubitz, kindly allowed me to continue to use its facilities after my retirement in 2001. Notably, our - brarian, Mrs. Jutta Theurich, and her right-hand help, Mrs. Rosemarie Schr- er, were most helpful in getting hold of the literature. I thank them very much. Without their constant help, this would have been very difficult indeed.
Download or read book Handbook of Pyrrolidone and Caprolactam Based Materials 6 Volume Set written by Osama M. Musa and published by John Wiley & Sons. This book was released on 2021-07-06 with total page 2665 pages. Available in PDF, EPUB and Kindle. Book excerpt: HANDBOOK OF PYRROLIDONE AND CAPROLACTAM BASED MATERIALS Brings together, for the first time, a comprehensive review of all aspects of pyrrolidone- and caprolactam-based materials This comprehensive, six-volume set describes the broad technical universe of γ- and ε- lactams, reviewing in-depth the chemistry of the small lactam-based molecules, uncovering their unique properties and showing how they have enabled a myriad of commercially important applications. From synthesis, through production and into applications, this extensive work targets significant and recent trends in γ- and ε-lactam science and technology and addresses all key aspects of pyrrolidone- and caprolactam-based materials to produce a definitive overview of the field. Handbook of Pyrrolidone and Caprolactam Based Materials provides a detailed and modern portrait of the impact of pyrrolidone- and caprolactam-based materials on the world, as well as potential future possibilities. Volume One presents the chemistry of small lactam-based molecules and uncovers their unique properties. Volume Two covers polymeric materials, including polyvinyl pyrrolidone and polyvinyl caprolactam, and reviews homopolymerization, copolymerization, controlled radical polymermization and acrylate based pyrrolidone polymerizations. Volume Three examines the physical chemistry and molecular interactions of pyrrolidone and caprolactam based materials. Volume Four expands upon the characterization theme from the third volume, and includes detailed discussions of nuclear magnetic resonance (NMR) and Fourier transform-infrared (FT-IR) spectroscopy, thermal and mechanical properties, and imaging techniques. Volume Five explores pharmaceutical applications in both ingredients and materials, as well as the antimicrobial properties and applications of pyrrolidone and caprolactam-based materials, and their toxicology. Volume Six covers personal and home care, skin care, transdermal applications and wound care, oral care, adhesion related applications and digital applications such as inkjet technology. Handbook of Pyrrolidone and Caprolactam Based Materials will appeal to industrial scientists and engineers interested in polymer development and manufacturing. It will also benefit academic researchers working in the fields of chemistry, materials science, and chemical and process engineering.
Download or read book Nitration and Aromatic Reactivity written by J. G. Hoggett and published by Cambridge University Press. This book was released on 1971-07-02 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1971 this volume claims that nitration is important because it is the most general process for the preparation of aromatic nitro-compounds.
Download or read book Principles of Organic Chemistry written by Robert J. Ouellette and published by Academic Press. This book was released on 2015-02-13 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Class-tested and thoughtfully designed for student engagement, Principles of Organic Chemistry provides the tools and foundations needed by students in a short course or one-semester class on the subject. This book does not dilute the material or rely on rote memorization. Rather, it focuses on the underlying principles in order to make accessible the science that underpins so much of our day-to-day lives, as well as present further study and practice in medical and scientific fields. This book provides context and structure for learning the fundamental principles of organic chemistry, enabling the reader to proceed from simple to complex examples in a systematic and logical way. Utilizing clear and consistently colored figures, Principles of Organic Chemistry begins by exploring the step-by-step processes (or mechanisms) by which reactions occur to create molecular structures. It then describes some of the many ways these reactions make new compounds, examined by functional groups and corresponding common reaction mechanisms. Throughout, this book includes biochemical and pharmaceutical examples with varying degrees of difficulty, with worked answers and without, as well as advanced topics in later chapters for optional coverage. Incorporates valuable and engaging applications of the content to biological and industrial uses Includes a wealth of useful figures and problems to support reader comprehension and study Provides a high quality chapter on stereochemistry as well as advanced topics such as synthetic polymers and spectroscopy for class customization
Download or read book Absorption and Drug Development written by Alex Avdeef and published by John Wiley & Sons. This book was released on 2003-09-19 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many times drugs work fine when tested outside the body, but when they are tested in the body they fail. One of the major reasons a drug fails is that it cannot be absorb by the body in a way to have the effect it was intended to have. Permeability, Solubility, Dissolution, and Charged State of Ionizable Molecules: Helps drug discovery professionals to eliminate poorly absorbable molecules early in the drug discovery process, which can save drug companies millions of dollars. Extensive tabulations, in appendix format, of properties and structures of about 200 standard drug molecules.
Download or read book Nutritional Antioxidant Therapies Treatments and Perspectives written by Kaïs Hussain Al-Gubory and published by Springer. This book was released on 2018-03-10 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a collection of expert reviews on the use of plant-based antioxidant therapies in disease prevention and treatment. Topics discussed include the uses of plant and nutritional antioxidants in the contexts of reproductive health and prenatal development, healthcare and aging, noncommunicable chronic diseases, and environmental pollution. The text is complemented by a wealth of color figures and summary tables.
Download or read book Tautomerism written by Liudmil Antonov and published by John Wiley & Sons. This book was released on 2013-10-25 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the gap between basic textbooks and over-specialized scientific publications, this is the first reference available to describe this interdisciplinary topic for PhD students and scientists starting in the field. The result is an introductory description providing suitable practical examples of the basic methods used to study tautomeric processes, as well as the theories describing the tautomerism and proton transfer phenomena. It also includes different spectroscopic methods for examining tautomerism, such as UV-VIs, time-resolved fluorescence spectroscopy, and NMR spectroscopy, plus the theoretical and practical background information. With its excellent overview of the methods, theories and examples, this is the perfect guide for any scientist dealing with tautomeric compounds in a wider context.
Download or read book Clarke s Analytical Forensic Toxicology written by Gail Cooper and published by Pharmaceutical Press. This book was released on 2013-05-28 with total page 657 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable textbook, written by international experts, covers all the main elements of forensic toxicology and analytical toxicology techniques as well as the important parts of pharmacokinetics, drug metabolism, and pharmacology in general, with a particular focus on drugs of abuse.
Download or read book Enological Chemistry written by Juan Moreno and published by Academic Press. This book was released on 2012-05-30 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enological Chemistry is written for the professional enologist tasked with finding the right balance of compounds to create or improve wine products. Related titles lack the appropriate focus for this audience, according to reviewers, failing either to be as comprehensive on the topic of chemistry, to include chemistry as part of the broader science of wine, or targeting a less scientific audience and including social and historical information not directly pertinent to the understanding of the role of chemistry in successful wine production. The topics in the book have been sequenced identically with the steps of the winemaking process. Thus, the book describes the most salient compounds involved in each vinification process, their properties and their balance; also, theoretical knowledge is matched with its practical application. The primary aim is to enable the reader to identify the specific compounds behind enological properties and processes, their chemical balance and their influence on the analytical and sensory quality of wine, as well as the physical, chemical and microbiological factors that affect their evolution during the winemaking process. Organized according to the winemaking process, guiding reader clearly to application of knowledge Describes the most salient compounds involved in each step enabling readers to identify the specific compounds behind properties and processes and effectively work with them Provides both theoretical knowledge and practical application providing a strong starting point for further research and development
Download or read book Molecular Targets and Therapeutic Uses of Spices written by Bharat B. Aggarwal and published by World Scientific. This book was released on 2009 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional uses of spices : an overview / Ajaikumar B. Kunnumakkara ... [et al.] -- Black pepper (Piper nigrum) and its bioactive compound, piperine / Krishnapura Srinivasan -- Cardamom (Elettaria cardamomum) and its active constituent, 1,8-cineole / Archana Sengupta and Shamee Bhattacharjee -- Molecular targets and health benefits of cinnamon / Kiran Panickar ... [et al.] -- Cloves (eugenol) / Yoshinori Kadoma ... [et al.] -- Coriander / Sanjeev Shukla and Sanjay Gupta -- Fenugreek (diosgenin) / Jayadev Raju and Chinthalapally V. Rao -- Diallyl sulfide from garlic / Girija Kuttan and Punathil Thejass -- Ginger (6-gingerol) / Nidhi Nigam, Jasmine George, and Yogeshwer Shukla -- Kalonji (thymoquinone) / Ahmed O. Kaseb and Abdel-Hafez A. Selim -- Kokum (garcinol) / Manoj K. Pandey, Ajaikumar B. Kunnumakkara, and Bharat B. Aggarwal -- Capsaicin : a hot spice in the chemoprevention of cancer / Joydeb Kumar Kundu and Young-Joon Surh -- Rosemary (rosmarinic acid) / Jongsung Lee ... [et al.] -- Mint and its constituents / Ajaikumar B. Kunnumakkara ... [et al.] -- Turmeric (curcumin) / Jen-Kun Lin and Shoei-Yn Lin Shiau.
Download or read book Electrochemistry in Nonaqueous Solutions written by Kosuke Izutsu and published by John Wiley & Sons. This book was released on 2009-09-22 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: An excellent resource for all graduate students and researchers using electrochemical techniques. After introducing the reader to the fundamentals, the book focuses on the latest developments in the techniques and applications in this field. This second edition contains new material on environmentally-friendly solvents, such as room-temperature ionic liquids.
Download or read book Comprehensive Chirality written by and published by Newnes. This book was released on 2012-12-31 with total page 5635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although many books exist on the subject of chiral chemistry, they only briefly cover chiral synthesis and analysis as a minor part of a larger work, to date there are none that pull together the background information and latest advances in one comprehensive reference work. Comprehensive Chirality provides a complete overview of the field, and includes chiral research relevant to synthesis, analytic chemistry, catalysis, and pharmaceuticals. The individual chapters in each of the 9 volumes provide an in depth review and collection of references on definition, technology, applications and a guide/links to the related literature. Whether in an Academic or Corporate setting, these chapters will form an invaluable resource for advanced students/researchers new to an area and those who need further background or answers to a particular problem, particularly in the development of drugs. Chirality research today is a central theme in chemistry and biology and is growing in importance across a number of disciplinary boundaries. These studies do not always share a unique identifying factor or subject themselves to clear and concise definitions. This work unites the different areas of research and allows anyone working or researching in chiral chemistry to navigate through the most essential concepts with ease, saving them time and vastly improving their understanding. The field of chirality counts several journals that are directly and indirectly concerned with the field. There is no reference work that encompasses the entire field and unites the different areas of research through deep foundational reviews. Comprehensive Chirality fills this vacuum, and can be considered the definitive work. It will help users apply context to the diverse journal literature offering and aid them in identifying areas for further research and/or for solving problems. Chief Editors, Hisashi Yamamoto (University of Chicago) and Erick Carreira (ETH Zürich) have assembled an impressive, world-class team of Volume Editors and Contributing Authors. Each chapter has been painstakingly reviewed and checked for consistent high quality. The result is an authoritative overview which ties the literature together and provides the user with a reliable background information and citation resource.
Download or read book Iron Porphyrins written by A. B. P. Lever and published by Wiley-VCH. This book was released on 1989-03-31 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porphyrins play a vital role in many biological functions including oxygen transport, electron transfer and catalyzing the incorporation of oxygen into other molecules. This current survey discusses the use of modern physical techniques to probe porphyrin structure and function. The authors review the data available through a particular technique and show what can be learned therefrom about the (electronic) structure and function of biologically important porphyrins. The techniques include magnetic circular dichroism, X-ray absorption fine structure (EXAFS) and Mössbauer spectroscopies. All contributors are well known in their respective fields, enjoying world-wide reputation.
