Chemical Abstracts ServiceCAS (Chemical Abstracts Service) is a division of the American Chemical Society. It is a source of chemical information and is located in Columbus, Ohio, United States. Print periodicalsChemical Abstracts is a periodical index that provides numerous tools such as SciFinder as well as tagged keywords, summaries, indexes of disclosures, and structures of compounds in recently published scientific documents.
Molecule editorA molecule editor is a computer program for creating and modifying representations of chemical structures. Molecule editors can manipulate chemical structure representations in either a simulated two-dimensional space or three-dimensional space, via 2D computer graphics or 3D computer graphics, respectively. Two-dimensional output is used as illustrations or to query chemical databases.
David A. EvansDavid A. Evans (January 11, 1941 – April 29, 2022) was an American chemist who was the Abbott and James Lawrence professor of chemistry at Harvard University. He was a prominent figure in the field of organic chemistry and his research focused on synthetic chemistry and total synthesis, particularly of large biologically active molecules. Among his best-known works is the development of aldol reaction methodology (for example, Evans' acyl oxazolidinone method).
Google ScholarGoogle Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other scholarly literature, including court opinions and patents.Revvity
Google PatentsGoogle Patents is a search engine from Google that indexes patents and patent applications.
Hierarchical editing language for macromoleculesThe hierarchical editing language for macromolecules (HELM) is a method of describing complex biological molecules. It is a notation that is machine readable to render the composition and structure of peptides, proteins, oligonucleotides, and related small molecule linkers. HELM was developed by a consortium of pharmaceutical companies in what is known as the Pistoia Alliance. Development began in 2008. In 2012 the notation was published openly and for free.PerkinElmer
Partition coefficientRatio of concentrations in a mixture at equilibrium An equilibrium of dissolved substance distributed between a hydrophobic phase and a hydrophilic phase is established in special glassware such as this separatory funnel that allows shaking and sampling, from which log P is determined. Here, the green substance has a greater solubility in the lower layer than in the upper layer.
Chemical table fileChemical table file (CT file) is a family of text-based chemical file formats that describe molecules and chemical reactions. One format, for example, lists each atom in a molecule, the x-y-z coordinates of that atom, and the bonds among the atoms. The formats were created by MDL Information Systems (MDL), which was acquired by Symyx Technologies then merged with Accelrys Corp., and now called BIOVIA, a subsidiary of Dassault Systèmes of Dassault Group.
Chemical nomenclatureChemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC). IUPAC Nomenclature ensures that each compound (and its various isomers) have only one formally accepted name known as the preferred IUPAC name.
Nuclear magnetic resonanceSpectroscopic technique based on change of nuclear spin stateBruker 700 MHz nuclear magnetic resonance (NMR) spectrometer.Nuclear Magnetic Resonance (NMR) basic principlesNuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are disturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus.
Structural chemistryStructural chemistry is a part of chemistry and deals with the connectivity and shape of individual chemical species, which includes molecules, ions, and polymers. Structure is central to understanding the behavior of chemical species, so the topic is foundational. Structure is integrated into the major branches of chemistry, i.e. inorganic chemistry and organic chemistry.*As an Amazon Associate I earn from qualifying purchases.