1. Metabolic Enzyme/Protease
    Anti-infection
  2. Cathepsin
    SARS-CoV
  3. E 64c

E 64c 

目录号: HY-100227 纯度: 99.73%
产品使用指南

E 64c 是半胱氨酸蛋白酶 (cysteine proteases) 天然环氧化物抑制剂的衍生物,也是钙离子激活中性蛋白酶 (CANP) 的抑制剂和组织蛋白酶C (cathepsin C) 的弱不可逆抑制剂。E 64c 可抑制 MERS-CoV.

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E 64c Chemical Structure

E 64c Chemical Structure

CAS No. : 76684-89-4

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     可免费申领三个不同产品的试用装。

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规格 价格 是否有货 数量
10 mM * 1 mL in DMSO ¥1760 In-stock
5 mg ¥1600 In-stock
10 mg ¥2800 In-stock
50 mg ¥10000 In-stock
100 mg 询价

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MCE 顾客使用本产品发表的科研文献

  • 生物活性

  • 实验参考方法

  • 纯度 & 产品资料

  • 参考文献

生物活性

E 64c is a derivative of naturally occurring epoxide inhibitor of cysteine proteases, a Calcium-activated neutral protease (CANP) inhibitor and a very weak irreversible cathepsin C inhibitor. E 64c exhibits entry-blocking effect for MERS-CoV.

IC50 & Target

Cysteine proteases[1], CANP[2], Cathepsin C[3].

体外研究
(In Vitro)

E-64c, a derivative of naturally occurring epoxide inhibitor of cysteine proteases, with papain; especially with regard to the hydrogen bonding and hydrophobic interactions of the ligands with conserved residues in the catalytic binding site[1]. E 64c (k2/Ki=140±5M-1s-1) is demonstrated to be a lead structure for the development of irreversible cathepsin C inhibitors[3].

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

体内研究
(In Vivo)

The t-1/2 of plasma E-64c is 0.48 hours. The hemodynamic effects of E-64c are absent at this dose. Using two way analysis of variance, the effects of reperfusion (p=0.0016) or E-64c (p=0.0226) per se on infarct size are significant. In comparing Group A with Group B and Group C with Group D, the depletion of CPK in the E-64c treated groups (Groups A and C) is slightly less than in the vehicle-injected groups (Groups B and D). The insufficient effect of E-64c alone may be explained by the early administration and relatively short t-1/2. Since the effectiveness of NCO-700 has been established,6),7) our findings might indicate a small but beneficial effect of E-64c on infarct size and CPK content[2].

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

分子量

314.38

Formula

C₁₅H₂₆N₂O₅

CAS 号
运输条件

Room temperature in continental US; may vary elsewhere.

储存方式
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
溶解性数据
In Vitro: 

DMSO : 250 mg/mL (795.22 mM; Need ultrasonic)

配制储备液
浓度 溶剂体积 质量 1 mg 5 mg 10 mg
1 mM 3.1809 mL 15.9043 mL 31.8086 mL
5 mM 0.6362 mL 3.1809 mL 6.3617 mL
10 mM 0.3181 mL 1.5904 mL 3.1809 mL
*

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效
储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。

In Vivo:

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂:

——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议您现用现配,当天使用; 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶

  • 1.

    请依序添加每种溶剂: 10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.08 mg/mL (6.62 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (6.62 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中,混合均匀;向上述体系中加入50 μL Tween-80,混合均匀;然后继续加入 450 μL生理盐水定容至 1 mL。

    将 0.9 g 氯化钠,完全溶解于 100 mL ddH₂O 中,得到澄清透明的生理盐水溶液
  • 2.

    请依序添加每种溶剂: 10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.08 mg/mL (6.62 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (6.62 mM,饱和度未知) 的澄清溶液。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中,混合均匀。

    将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中,再用生理盐水定容至 10 mL,完全溶解,澄清透明
  • 3.

    请依序添加每种溶剂: 10% DMSO    90% corn oil

    Solubility: ≥ 2.08 mg/mL (6.62 mM); Clear solution

    此方案可获得 ≥ 2.08 mg/mL (6.62 mM,饱和度未知) 的澄清溶液,此方案不适用于实验周期在半个月以上的实验。

    以 1 mL 工作液为例,取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中,混合均匀。

*以上所有助溶剂都可在 MCE 网站选购。
参考文献
Animal Administration
[2]

Dogs[2]
Studies are carried out in 83 mongrel dogs with a mean weight of 11.2kg. They are anesthetized with intravenous sodium thiamylal (7mg/kg). An intravenous bolus of E-64c (100mg/kg), dissolved in saturated sodium bicarbonate, is administered immediately before the occlusion and after reperfusion in Group A (n=17), whereas Group B (n=17) receive only the vehicle solution at these times. In the remaining 49 dogs (Groups C and D), the LAD is permanently ligated at the same level and an intravenous bolus of either Loxistatin acid (100mg/kg) (Group C; n=24) or vehicle only (Group D; n=25) is given immediately before and 1 hour after the ligation. The dose of E-64c is designed for its possible use in clinical practice and the estimated intramyocardial Loxistatin acid molecular concentration is 1,000 times that of total mCANP[2].

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

参考文献
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  • 稀释计算器

The molarity calculator equation

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

质量   浓度   体积   分子量 *
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Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

浓度 (start) × 体积 (start) = 浓度 (final) × 体积 (final)
× = ×
C1   V1   C2   V2

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E 64c
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HY-100227
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