D-アラニン 化學(xué)特性,用途語,生産方法
外観
白色, 結(jié)晶～結(jié)晶性粉末
定義
本品は、次の化學(xué)式で表されるアミノ酸である。
溶解性
クロロホルム、エーテルに不溶。水に易溶。水に溶けやすく、エタノール及びアセトンにほとんど溶けない。
化粧品の成分用途
ヘアコンディショニング剤、皮膚コンディショニング剤
化學(xué)的特性
A white crystalline Powder with no peculiar smell and a sweet taste. It is easily soluble in water, slightly soluble in ethanol, and insoluble in acetone and ether. The decomposition point is 297°C. The specific rotation is [α]25D -1.8° (0.5–2.0 mg/ml, H2O) and [α]25D -14.6° (0.5–2.0 mg/ml, 5 mol/L HCl).
使用
D-Alanine is essential for the biosynthesis of peptidoglycan crosslinking sub-units that are used for bacterial cell walls.
主な応用
D-Alanine is a LHRH-antagonists, e.g., Abarelix (antineoplas-
tic)
定義
ChEBI: D-alanine is the D-enantiomer of alanine. It has a role as a human metabolite, an EC 4.3.1.15 (diaminopropionate ammonia-lyase) inhibitor and an Escherichia coli metabolite. It is a D-alpha-amino acid and an alanine. It is a conjugate base of a D-alaninium. It is a conjugate acid of a D-alaninate. It is an enantiomer of a L-alanine. It is a tautomer of a D-alanine zwitterion.
製造方法
D-Alanine can be obtained by hydrolysis and refining of proteins such as gelatin, sericin and corn protein, or it can be synthesized by chemical methods.
一般的な説明
Alanine is a non essential amino acid.
純化方法
Crystallise alanine from H2O or aqueous EtOH, i.e. crystallise it from 25% EtOH in water, or recrystallise it from 62.5% EtOH, wash it with EtOH and dry it to constant weight in vacuo over P2O5. [Gutter & Kegeles J Am Chem Soc 75 3893 1953, Walsh J Biol Chem 264 2394 1989.] 2,2'-Iminodipropionic acid is a likely impurity. [Beilstein 4 IV 2480. 2481.]
D-アラニン 上流と下流の製品情報(bào)
原材料
準(zhǔn)備製品