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Methyl trifluoromethanesulfonate, also commonly called methyl triflate and abbreviated MeOTf, is the organic compound with the formula CF 3 SO 2 OCH 3.It is a colourless liquid which finds use in organic chemistry as a powerful methylating agent. [2]
Sodium trifluoromethanesulfinate (CF 3 SO 2 Na) is the sodium salt of trifluoromethanesulfinic acid. Together with t-butyl hydroperoxide, an oxidant, this compound was found to be a suitable reagent for introducing trifluoromethyl groups onto electron-rich aromatic compounds by Langlois; this reagent is also known as the Langlois reagent.
Reagent shortages became a bottleneck for mass testing in the European Union (EU). [25] On 1 April, the UK government confirmed that 2,000 NHS staff had been tested for coronavirus since the outbreak began, but Cabinet Office Minister Michael Gove said a shortage of reagents meant it was not possible to screen the NHS's 1.2 million workforce. [26]
A triflate group is an excellent leaving group used in certain organic reactions such as nucleophilic substitution, Suzuki couplings and Heck reactions.Since alkyl triflates are extremely reactive in S N 2 reactions, they must be stored in conditions free of nucleophiles (such as water).
Folin's reagent or sodium 1,2-naphthoquinone-4-sulfonate is a chemical reagent used as a derivatizing agent to measure levels of amines and amino acids. [1] The reagent reacts with them in alkaline solution to produce a fluorescent material that can be easily detected.
For even more international statistics in table, graph, and map form see COVID-19 pandemic by country. COVID-19 pandemic is the worst-ever worldwide calamity experienced on a large scale (with an estimated 7 million deaths) in the 21st century. The COVID-19 death toll is the highest seen on a global scale since the Spanish flu and World War II.
The sulfonate ion. In organosulfur chemistry, a sulfonate is a salt, anion or ester of a sulfonic acid. Its formula is R−S(=O) 2 −O −, containing the functional group −S(=O) 2 −O −, where R is typically an organyl group, amino group or a halogen atom. Sulfonates are the conjugate bases of sulfonic acids.
MMS methylates DNA predominantly on N7-deoxyguanosine and N3-deoxyadenosine, and to a much lesser extent also methylates at other oxygen and nitrogen atoms in DNA bases, and also methylates one of the non-carbon bound oxygen atoms of the phosphodiester linkage.