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14,500 (December 2023) [5] Website. avantorsciences.com. Avantor, Inc. is an American biotechnology, chemicals, and pharmaceuticals company headquartered in Radnor, Pennsylvania. Established in 1904 as J.T. Baker, the company changed its name to Avantor in 2010. Avantor went public in 2019 and is now listed on the New York Stock Exchange under ...
Hach Company manufactures and distributes analytical instruments and reagents used to test the quality of water and other liquid solutions. Manufactured and distributed worldwide, Hach systems are designed to simplify analysis by offering on-line instrumentation, portable laboratory equipment, prepared reagents, easy-to-follow methods, and technical support.
Sodium hexanitritocobaltate (III) is an inorganic compound with the formula Na3[Co (NO2)6]. The anion of this yellow-coloured salt consists of the transition metal nitrite complex [Co (NO2)6]3−. It was a reagent for the qualitative test for potassium and ammonium ions. [ 2 ]
The Wolff–Kishner reduction is a reaction used in organic chemistry to convert carbonyl functionalities into methylene groups. [1] [2] In the context of complex molecule synthesis, it is most frequently employed to remove a carbonyl group after it has served its synthetic purpose of activating an intermediate in a preceding step.
Enantioselective ketone reductions convert prochiral ketones into chiral, non-racemic alcohols and are used heavily for the synthesis of stereodefined alcohols. [1] Carbonyl reduction, the net addition of H 2 across a carbon-oxygen double bond, is an important way to prepare alcohols. Stoichiometric reducing agents to accomplish this task ...
Cyanogen bromide is a common reagent in organic synthesis. In most reactions, it acts as a source of electrophilic cyanogen and nucleophilic bromide; carbocations preferentially attack the nitrogen atom. [4] In the presence of a Lewis acid, it cyanidates arenes. [9] BrCN converts alcohols to cyanates; amines to cyanamides or dicyanamides. [4]
Sigma-Aldrich. Sigma-Aldrich (formally MilliporeSigma) [5][6] is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group. Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. It grew through various acquisitions until it had ...
The capacity has been hampered by shortages of reagents, shortages of test kits components like nasal swabs, shortages of protective gear for health workers, limited laboratory workers and equipment, and the federal government's limited interventions to solve shortages, instead of leaving the issue to the free market, causing states and ...