1. GPCR/G Protein Neuronal Signaling Membrane Transporter/Ion Channel
  2. Adrenergic Receptor Sodium Channel Potassium Channel
  3. ICI 147798

ICI 147798 是一种口服有效的 β-肾上腺素受体 (β-adrenoceptor) 拮抗剂,其 pKB 为 9.1 (豚鼠右心房) 和 8.8 (豚鼠气管)。ICI 147798 是一种利尿剂和眼内压降低剂。ICI 147798 可阻断 β-肾上腺素受体,抑制异丙肾上腺素诱导的心动过速和血管降压反应,对 β-1 肾上腺素受体表现出缓慢解离、不可克服的拮抗作用,对 β-2 肾上腺素受体表现出可克服的竞争性拮抗作用。ICI 147798 可诱导利钠和利钾作用,抑制钠转运,降低眼内压[1]2]

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ICI 147798

ICI 147798 Chemical Structure

CAS No. : 83812-65-1

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  • 生物活性

  • 纯度 & 产品资料

  • 参考文献

生物活性

ICI 147798 is an orally effective β-adrenoceptor antagonist with a pKB of 9.1 (in guinea pig right atrium) and 8.8 (in guinea pig trachea). ICI 147798 acts as a diuretic and intraocular pressure-lowering agent. ICI 147798 blocks β-adrenoceptors, inhibits isoproterenol-induced tachycardia and vasodepressor responses, exhibits slowly dissociating, insurmountable antagonism against β1-adrenoceptors, and shows surmountable competitive antagonism against β2-adrenoceptors. ICI 147798 induces natriuresis and kaliuresis, inhibits sodium transport, and reduces intraocular pressure[1][2][3].

IC50 & Target[1]

β-adrenoceptor

8.8 (pkB)

体外研究
(In Vitro)

ICI 147798 可抑制离体蟾蜍膀胱标本中的 Na+ 转运,其黏膜侧和浆膜侧的 IC50 值分别为 56 μM 和 120 μM[1]
ICI 147798 是离体豚鼠右心房中的 β-肾上腺素受体拮抗剂,其 pKB 值为 9.1[1]
ICI 147798 是离体豚鼠气管中的 β-肾上腺素受体拮抗剂,其 pKB 值为 8.8[1]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

体内研究
(In Vivo)

ICI 147798 (0.125-0.75%;滴眼;单次给药) 对未麻醉的新西兰兔在水负荷诱导的高眼压模型中可产生具有统计学意义、浓度依赖性的眼压降低效果,其降眼压的 ED50 为 0.27%,0.5% 剂量下的作用持续时间为 5 小时[2]
ICI 147798 (0.1-1.0 mg/kg;静脉注射) 可作为强效静脉用 β-肾上腺素受体拮抗剂作用于未麻醉的新西兰兔,其阻断异丙肾上腺素诱导的心动过速的 ED50 为 0.23 mg/kg[2]
ICI 147798 (0.5%;局部给药;单剂量,每日 2 次,连续 4 天) 对未麻醉的新西兰兔体内异丙肾上腺素诱导的心动过速无显著阻断作用,即使在每日给药 2 次、连续给药 4 天后也是如此[2]

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: New Zealand rabbits (adult, 2-5 kg, both sexes, water-load-induced ocular hypertension model)[2]
Dosage: 300 μl, 0.5%; 200 μl, 0.5%; 200 μl, 0.125%; 200 μl, 0.25%; 100 μl, 0.5%; 200 μl, 0.75%; 100 μl, 0.75%
Administration: eye drop; single dose
Result: Reduced mean water-load-induced IOP increase to 4.0 mmHg at 1 hour, 5.3 mmHg at 3 hours, and 6.2 mmHg at 5 hours after 300 μl, 0.5% topical dosing to one eye.
Reduced mean water-load-induced IOP increase to 4.5 mmHg (left eye) and 4.0 mmHg (right eye) at 1 hour after 200 μl, 0.5% topical dosing to both eyes (P<0.05 vs control).
Exhibited concentration-dependent IOP-lowering effect with an ED50 of 0.27%.
Reduced mean water-load-induced IOP increase to 5.5 mmHg (left eye) and 5.5 mmHg (right eye) after 100 μl, 0.5% dosing in 5% PEG 400 + 5% Pluronic F127 vehicle.
Showed no enhanced IOP-lowering efficacy with 0.75% concentration or 200 μl volume, with mean ΔmmHg values ranging from 5.0 to 5.5 mmHg.
分子量

515.99

Formula

C24H30ClN7O4

CAS 号
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.

纯度 & 产品资料
参考文献
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产品名称:
ICI 147798
目录号:
HY-182635
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