详情介绍
L-组氨酸盐酸盐一水物
L-Histidine monohydrate monohydrochloride
Cas 号: 【5934-29-2】 M D L: MFCD00151027
L-组氨酸盐酸盐一水物分子式: C6H9N3O2·HCl·H2O 分子量: 209.63
别 名: L-盐酸组氨酸一水物,盐酸组氨酸
L-α-Amino-β-(4-imidazolyl)propionic acid monohydrochloride
L-Histidine Hydrochloride Monohydrate
H-His-OH.HCl
98% 5g
98% 25g
98% 100g
98% 500g
性 状: 白色结晶或结晶性粉末,无臭,稍苦酸味。易溶于甲酸,溶于水,不溶于乙醇。 水中溶解度:169.9 g/l (20 C)
[a]20/D: 9.9° (c=11, 6 N HCl)
质量标准: 外观Appearance 白色结晶或结晶粉末
红外光谱鉴别Infrared spectrometry 和对照品匹配
纯度Purity ≥98.0% (TLC)
水溶解试验Solubility in Water 溶液透明
比旋光度Specific rotation [a]20/D +9.0 ~ +10.3 °(c=11, 6 N HCl)
重金属Heavy metals (as Pb) <10 ppm
其它氨基酸Other amino acids <0.5 % (TLC)
干燥损失Loss on drying ≤2.0 %
SO4 < 300 ppm
NH4 < 200 ppm
Fe < 10 ppm
pH 3 - 5 (2.5% 溶液,25°C)
贮 存: 用途 组织胺(histamine)的前体物质,依靠组氨酸脱羧酶(histidine decarboxylase)。
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