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(2-Carboxyethyl)dimethylsulfonium Chloride is the hydrochloride salt of Dimethylsulfoniopropionate (D479360), a metabolite produced primarily by marine phytoplankton and is the main precursor to the c limatically important gas dimethylsulfide (DMS).

GENERAL METHOD: A solution was prepared by dissolving 0.99 g (15.9 mmol) of dimethyl sulfide in 3 mL of acetonitrile at room temperature. The solution was slowly added to a solution of 0.5 g (5.3 mmol) of 3-chloropropionic acid dissolved in 5 mL of acetonitrile under stirring. Upon completion of the reaction, the resulting colorless crystal product was collected by filtration and washed several times with ether. Finally, the product was dried under vacuum.

[1] Russian Journal of General Chemistry, 2017, vol. 87, # 9, p. 1903 - 1907
[2] Zh. Obshch. Khim., 2017, vol. 87, # 9, p. 1419 - 1423,5
[3] Patent: CN107382802, 2017, A. Location in patent: Paragraph 0011; 0013; 0015