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Isoelectronicity is a phenomenon observed when two or more molecules have the same structure (positions and connectivities among atoms) and the same electronic configurations, but differ by what specific elements are at certain locations in the structure. For example, CO, NO +, and N 2 are isoelectronic, while CH 3 COCH 3 and CH 3 N = NCH 3 are ...
In drug discovery, either a large series of structural analogs of an initial lead compound are created and tested as part of a structure–activity relationship study [5] or a database is screened for structural analogs of a lead compound. [6] Chemical analogues of illegal drugs are developed and sold in
anon, Guidance for Industry: Container Closure Systems for Packaging Human Drugs and Biologics, May 1999, Food and Drug Administration, Center for Drug Evaluation and Research, Lockhart, H., and Paine, F.A., "Packaging of Pharmaceuticals and Healthcare Products", 2006, Blackie, ISBN 0-7514-0167-6
Researchers have identified nearly 200 chemicals used to make food packaging that could possibly increase the risk of breast cancer.. Found in plastics and paper, some of the potential mammary ...
By the late 1980s, BFS had been well-established in the packaging industry, especially for packaging pharmaceutical and healthcare products. [14] During the 1980s and 1990s, BFS came into use for the now common small volume unit-dosage forms. [12] Since the early 2000s, BFS has been emerging as the preferred packaging process for parenteral ...
Modified atmosphere packaging (MAP) is the practice of modifying the composition of the internal atmosphere of a package (commonly food packages, drugs, etc.) in order to improve the shelf life. [ 1 ] [ 2 ] The need for this technology for food arises from the short shelf life of food products such as meat, fish, poultry, and dairy in the ...
A deuterated drug is a small molecule medicinal product in which one or more of the hydrogen atoms in the drug molecule have been replaced by its heavier stable isotope deuterium. Because of the kinetic isotope effect , deuterium-containing drugs may have significantly lower rates of metabolism , and hence a longer half-life .
The structure of the complex of sodium (Na +) and the antibiotic monensin A Structure of a potassium complex of a crown ether, a synthetic ionophore-ion complex. Biological activities of metal ion-binding compounds can be changed in response to the increment of the metal concentration, and based on the latter compounds can be classified as "metal ionophores", "metal chelators" or "metal ...