• 组胺 BR,98%
  • G62975 51-45-6

    Histamine

产品订购
产品货号重量货期 优惠价 数量
G62975-1g 1g 准现货 询价
G62975-5g 5g 准现货 询价
  • 产品信息

属性

溶解性 Soluble in water, alcohol, and hot chloroform.
敏感性 易吸潮,对热和光敏感
存贮条件 储存温度-20°C
沸点 167°C
熔点 83-84°C
密度 1.1400
荧光
IC50
pK Values

描述

别名 β-氨乙基咪唑;1H-咪唑-4-乙胺;2-(4-咪唑基)乙胺;2-(4-Imidazolyl)ethylamine;1H-Imidazole-4-ethanamine; Ergotidine
产品介绍 有吸湿性。在日光下易变质。组胺由组氨酸脱羧基形成,广泛分布在哺乳动物的组织中,尤其在肥大细胞及有关嗜碱性白细胞内(在变态反应中肥大细胞释放出组胺)。可以组氨酚为原料发酵制得。
用途 内源性H1 和 H2 组胺受体激动剂;H1 激活并使Ca2+移动;H2 激活并刺激神经元中腺苷酸环化酶(adenylate cyclase)活性;激活NO合成酶;血管扩张剂。
生化机理 Histamine, Free Base is a potent vasodilator found in normal tissues and blood. This compound is formed by the decarboxylation of L-histidine and activates NOS (nitric oxide synthase), resulting in the release of nitric oxide. Activation of Histamine H1 Receptors leads to Ca2+ mobilization; whereas, Histamine H2 Receptor activation stimulates adenylate cyclase activity in neurons. Histamine inhibits the synthesis of IL-2 and γ-IFN in peripheral blood mononuclear cells and lipopolysaccharide-induced synthesis of TNF-α in monocytes via H2 receptor activation.

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