Histamine
Molecular Structure:
MDL:
MFCD00005210
Molecular Formula:
C5H9N3
Molecular Weight:
115.15
Alias:
組織胺,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:
無色針狀晶體。有吸濕性。在日光下易變質(zhì)。組胺由組氨酸脫羧基形成,
熔點:83~84℃
沸點:167 °C/0.8 mmHg
廣泛分布在哺乳動物的組織中,尤其在肥大細(xì)胞及有關(guān)嗜堿性白細(xì)胞內(nèi)(在變態(tài)反應(yīng)中肥大細(xì)胞釋放出組胺)??梢越M氨酚為原料發(fā)酵制得。它是變態(tài)反應(yīng)的藥理介質(zhì),能引起血管擴張、毛細(xì)血管通透性增加、平滑肌收縮。支氣管平滑肌收縮能使動物呼吸困難,并能刺激胃液分泌。在體內(nèi),組胺為組胺酶和咪唑-N-甲基轉(zhuǎn)羧酶所滅活。在中樞神經(jīng)系統(tǒng)中的某些部位,特別是下丘腦含有組胺,它存在于突觸體內(nèi),可能是中樞神經(jīng)的一種介質(zhì)。它還可能與外周神經(jīng)的感覺及傳導(dǎo)有密切關(guān)系。以檢查胃的分泌機能。可由組氨酸脫羧制成。醫(yī)療上主要利用其促進胃酸分泌的作用。
Storage:
儲存溫度?20°C
內(nèi)源性H1 和 H2 組胺受體激動劑;H1 激活并使Ca2+移動;H2 激活并刺激神經(jīng)元中腺苷酸環(huán)化酶(adenylate cyclase)活性;激活NO合成酶;血管擴張劑。
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