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Supelco is the chromatography products branch of Sigma-Aldrich. It provides chromatography columns and related tools for environmental, government, food and beverage, pharmaceutical, biotechnology, medical and chemical laboratories; sample preparation products and chemical reference standards. The SAFC Logo.
Aldrichimica Acta is a scientific journal published by Sigma-Aldrich. Established in 1968 in Milwaukee, Wi, Aldrichimica Acta publishes reviews in the field of synthetic organic chemistry, with each issue focusing on a special topic. The journal is open access. In 2015, the Acta was ranked #1 among journals in the field of organic chemistry by ...
The life science business of Merck, formerly known as Merck Millipore, was created in July 2010 following the completed acquisition of the US company Millipore. It employs around 19,000 people in 66 countries and runs 65 manufacturing sites and uses the brands Sigma-Aldrich, Milli-Q and Millipore. [65]
Cellulose, dextran, agarose, and other insoluble complexes are unaffected because they compose inert matrices, hence why they are so often derivatized with strong and weak cation and anion exchangers in chromatography. DEAE-C beads have diethylaminoethyl chains covalently bound to oxygen atoms on the D-glucose subunits of cellulose.
Merck Millipore was the brand used by Merck Group's (not US-based Merck & Co.) global life science business until 2015 when the company re-branded.It was formed when Merck acquired the Millipore Corporation in 2010.
At a low concentration, TFA is used as an ion pairing agent in liquid chromatography of organic compounds, particularly peptides and small proteins. TFA is a versatile solvent for NMR spectroscopy (for materials stable in acid). It is also used as a calibrant in mass spectrometry. [10] TFA is used to produce trifluoroacetate salts. [11]
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Bis(trimethylsilyl)sulfide is a reagent for the conversion of metal oxides and chlorides into the corresponding sulfides. [5] This transformation exploits the affinity of silicon(IV) for oxygen and halides.