Histamine
Molecular Structure:
MDL:
MFCD00005210
Molecular Formula:
C5H9N3
Molecular Weight:
115.15
Alias:
组织胺,β-氨乙基咪唑,1H-咪唑-4-乙胺
2-(4-Imidazolyl)ethylamine
Product order:
Name |
Specifications |
Packing |
Price |
Delivery |
Histamine |
97% |
1g |
RMB 1193.5 |
Consulting service |
Histamine |
97% |
5g |
RMB 5137 |
Consulting service |
Character:
无色针状晶体。有吸湿性。在日光下易变质。组胺由组氨酸脱羧基形成,
熔点:83~84℃
沸点:167 °C/0.8 mmHg
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。它是变态反应的药理介质,能引起血管扩张、毛细血管通透性增加、平滑肌收缩。支气管平滑肌收缩能使动物呼吸困难,并能刺激胃液分泌。在体内,组胺为组胺酶和咪唑-N-甲基转羧酶所灭活。在中枢神经系统中的某些部位,特别是下丘脑含有组胺,它存在于突触体内,可能是中枢神经的一种介质。它还可能与外周神经的感觉及传导有密切关系。以检查胃的分泌机能。可由组氨酸脱羧制成。医疗上主要利用其促进胃酸分泌的作用。
Storage:
储存温度−20°C
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。
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