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|Section2= |Section7= }} 1,2,4-Butanetriol is a clear or slightly yellow, odorless, hygroscopic, flammable, viscous liquid. It is an alcohol with three hydrophilic alcoholic hydroxyl groups. It is similar to glycerol and erythritol. It is chiral, with two possible enantiomers. 1,2,4-Butanetriol is used in the manufacture of butanetriol trinitrate (BTTN), an important military propellant. 1,2,4-Butanetriol is also used as a precursor for two cholesterol-lowering drugs, Crestor and Zetia, which are derived from D-3,4-dihydroxybutanoic acid, by using 3-hydroxy-gamma-butyrolactone as a chiral synthon (【引用サイトリンク】title=Biosynthetic Pathways ). It is as one of the monomers for manufacture of some polyesters and as a solvent. 1,2,4-Butanetriol can be prepared synthetically by several different methods such as hydroformylation of glycidol and subsequent reduction of the product, sodium borohydride reduction of esterified malic acid, or catalytic hydrogenation of malic acid.〔''Chemical & Engineering News'', May 31, 2004, Volume 82, Number 22, pp. 31-34, "Biomass or Bust" (Web version )〕 However, of an increasing importance is the biotechnological synthesis using genetically engineered ''Escherichia coli'' and ''Pseudomonas fragi'' bacteria.〔''The State News'', Feb. 12, 2004, "Propelling Research" by Meghan Gilbert. (= 22196 Web version )〕 ==References== 〔 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「1,2,4-Butanetriol」の詳細全文を読む スポンサード リンク
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