DL-METHIONINE

DL-METHIONINE

L-methionine, also known as L-methionine, is the left-handed body of methionine. The chemical formula is C5H11NO2S. Its chemical property is colorless or white shiny flake crystal or white crystalline powder, with a slight special smell and slightly bitter taste. Melting point 280 ~ 281 ℃. It is unstable to strong acids and can lead to demethylation. Soluble in water (5.6g/100ml, 30 ℃), warm dilute ethanol, alkaline solution or dilute inorganic acid. Insoluble in ethanol, almost insoluble in ether. Toxicity: LD50 29mmol / kg (rats, intraperitoneal injection).