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|Section2= |Section6= |Section7= |Section8= }} Trimethylglycine (TMG) is an that occurs in plants. Trimethylglycine was the first betaine discovered; originally it was simply called betaine because, in the 19th century, it was discovered in sugar beets.〔Hubert Schiweck, Margaret Clarke, Günter Pollach "Sugar" in Ullmann’s Encyclopedia of Industrial Chemistry 2007, Wiley-VCH, Weinheim.〕 Since then, many other betaines have been discovered, and the more specific name ''glycine betaine'' distinguishes this one. == Structure and reactions == Trimethylglycine is an N-trimethylated amino acid. This quaternary ammonium exists as the zwitterion at neutral pH. Strong acids such as hydrochloric acid convert TMG to various salts, with HCl yielding betaine hydrochloride: :(CH3)3N+CH2CO2− + HCl → ()Cl− Demethylation of TMG gives dimethylglycine. Degradation of TMG yields trimethylamine, the scent of putrifying fish. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「trimethylglycine」の詳細全文を読む スポンサード リンク
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