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Repeated exposures to 1/10 of the LCt 50 did not produce overt systemic toxicity or significant pathology. [7] MSF can also cause severe skin burns and serious eye damage, if contact is made. It is a lachrymator and its vapor causes tears in eyes. [8] [2] Methanesulfonyl fluoride has a pungent odor.
PMSF does not inactivate all serine proteases. [1] The effective concentration of PMSF is between 0.1 - 1 mM. The half-life is short in aqueous solutions (110 min at pH 7, 55 min at pH 7.5, and 35 min at pH 8, all at 25 °C). [2] At 4˚C, pH 8, PMSF is almost completely degraded after 1 day. [2]
The LD 50 of MSM is greater than 17.5 grams per kilogram of body weight. [16] Extensive research in animal models indicates MSM has a very low toxicity when administered both orally and topically. [17] [18] [19] MSM is considered 'Possibly Safe' at therapeutic doses. [13] [20]
Sulfuryl fluoride (also spelled sulphuryl fluoride) is an inorganic compound with the formula SO 2 F 2. It is an easily condensed gas and has properties more similar to sulfur hexafluoride than sulfuryl chloride , being resistant to hydrolysis even up to 150 °C. [ 3 ]
Related to mesylate is the mesyl (Ms) or methanesulfonyl (CH 3 SO 2) functional group. The shortened term itself was coined by Helferich et al. in 1938 similarly to tosyl adopted earlier. [ 4 ] Methanesulfonyl chloride is often referred to as mesyl chloride.
In chemistry, a sulfonyl halide consists of a sulfonyl (>S(=O) 2) group singly bonded to a halogen atom. They have the general formula RSO 2 X, where X is a halogen.The stability of sulfonyl halides decreases in the order fluorides > chlorides > bromides > iodides, all four types being well known.
Methanesulfonyl chloride is mainly used to give methanesulfonates by its reaction with alcohols in the presence of a non-nucleophilic base. [8] In contrast to the formation of toluenesulfonates from alcohols and p-toluenesulfonyl chloride in the presence of pyridine, the formation of methanesulfonates is believed to proceed via a mechanism wherein methanesulfonyl chloride first undergoes an ...
2.5 mg/kg (mice, intraperitoneal) [1] Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references