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

E 64c 

Cat. No.: HY-100227 Purity: 99.73%
COA Handling Instructions

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.

For research use only. We do not sell to patients.

E 64c Chemical Structure

E 64c Chemical Structure

CAS No. : 76684-89-4

Size Price Stock Quantity
Solution
10 mM * 1 mL in DMSO USD 176 In-stock
Solid + Solvent
10 mM * 1 mL
ready for reconstitution
 USD 176 In-stock
Solid
5 mg USD 160 In-stock
10 mg USD 280 In-stock
50 mg USD 1000 In-stock
100 mg USD 1800 In-stock
200 mg   Get quote  
500 mg   Get quote  

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This product is a controlled substance and not for sale in your territory.

Customer Review

Based on 2 publication(s) in Google Scholar

Top Publications Citing Use of Products

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

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].
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.
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.
Molecular Weight

314.38

Appearance

Solid

Formula

C15H26N2O5
CAS No.
SMILES

O=C([[email protected]]1O[[email protected]@H]1C(N[[email protected]](C(NCCC(C)C)=O)CC(C)C)=O)O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

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

Preparing
Stock Solutions
Concentration Solvent Mass 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
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

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

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

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

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

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

*All of the co-solvents are available by MCE.
Purity & Documentation
References
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.
References
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Keywords:

E 64c76684-89-4CathepsinSARS-CoVSARS coronavirusInhibitorinhibitorinhibit

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