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The term "biguanidine" often refers specifically to a class of drugs that function as oral antihyperglycemic drugs used for diabetes mellitus or prediabetes treatment. [4] Examples include: Metformin - widely used in treatment of diabetes mellitus type 2; Phenformin - withdrawn from the market in most countries due to toxic effects
Structure of chlorhexidine, a bisbiguanide antiseptic.. Bisbiguanides are a class of chemically related compounds known for their bactericidal properties. Generally considered to be of the generic formula: R 1 R 2 N.C(:NR 6)NH.C(:NH)NH.CH 2 X--(CH 2) 3 NH.C(:NH)NH.C(:NR 7)NR 3 R 4 V. [1] These compounds include the antiseptics chlorhexidine and alexidine.
This page was last edited on 14 May 2014, at 13:04 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
Synthesis mechanism Year that was Patented Governmental approval Patented expired Synthesis discoverer Year 1803–1805 [28] Morphine: Gates synthesis [29] 1952 1820: Quinine (isolation) Woodward and Doering: 1944 1830s Santonin: 1832: Chloral hydrate: Justus von Liebig: 1832 1833: Diastase: 1853 Acetylsalicylic acid (Aspirin) 1899 1875 ...
Important conceptual work on retrosynthetic analysis was published by George Vladutz in 1963. [ 2 ] [ 3 ] E.J. Corey formalized and popularized the concept from 1967 onwards in his article General methods for the construction of complex molecules and his book The Logic of Chemical Synthesis .
The publication is one of the most widely cited texts in environmental chemistry. In 1999, Stumm and Morgan received the Stockholm Water Prize for their contributions in the field. The citation specifically mentioned Aquatic Chemistry where it was described as a "seminal book" that is "used in education all over the world". [18]
The synthesis reported by Bodwell/Li (racemic, 2002) was a formal synthesis as it produced a compound already prepared by Rawal (no. 5 in the Rawal synthesis). The key step was an inverse electron demand Diels–Alder reaction of cyclophane 1 by heating in N,N-diethylaniline (dinitrogen is expulsed) followed by reduction of double bond in 2 to ...
A detailed crystallographic analysis of guanidine was elucidated 148 years after its first synthesis, despite the simplicity of the molecule. [6] In 2013, the positions of the hydrogen atoms and their displacement parameters were accurately determined using single-crystal neutron diffraction. [7]