2. Metabolic Enzyme/Protease
  3. Ser/Thr Protease
  4. Patamostat

Patamostat (E-3123) is a potent protease inhibitor. Patamostat potently inhibits trypsin, plasmin and thrombin with IC50s of 39 nM, 950 nM and 1.9 μM, respectively. Patamostat may possess suppressing effects on pathogenesis and development of acute pancreatitis.

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Patamostat Chemical Structure

Patamostat Chemical Structure

CAS No. : 114568-26-2

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5 mg USD 300 In-stock
10 mg USD 480 In-stock
25 mg USD 950 In-stock
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100 mg USD 2250 In-stock
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Customer Review

Based on 1 publication(s) in Google Scholar

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Patamostat Related Antibodies

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  • Purity & Documentation

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Description

Patamostat (E-3123) is a potent protease inhibitor. Patamostat potently inhibits trypsin, plasmin and thrombin with IC50s of 39 nM, 950 nM and 1.9 μM, respectively. Patamostat may possess suppressing effects on pathogenesis and development of acute pancreatitis[1][2].

IC50 & Target

IC50: 39 nM (trypsin), 950 nM (plasmin) and 1.9 μM (thrombin)[1]
In Vivo

Patamostat (intravenous infusion) at 0.03-0.3 mg/kg in rats or at 0.3-3.0 mg/kg in rabbits reduces mortality after the induction of pancreatitis in a dose-dependent manner[1].
Patamostat (1.0-3.0 mg/kg; intravenous infusion) reduces the increases of serum trypsin and lipase activities in dogs with pancreatitis[1].
Patamostat (2 mg/kg per h; continuous infusion) improves almost all parameters, including mortality rate, serum and ascitic fluid amylase levels, plasma endotoxin and serum FDP levels, and distribution of lysosomal enzyme in male Wistar rats[2].

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

Animal Model: Male Wistar rats weighing about 350 g[2]
Dosage: 2 mg/kg
Administration: Continuous infusion per h for 1 h
Result: Significantly improved the survival rate.
Molecular Weight

412.46

Formula

C20H20N4O4S
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(OC1=CC=C(SCCN2C(CCC2=O)=O)C=C1)C3=CC=C(NC(N)=N)C=C3
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, sealed storage, away from moisture and light

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

Solvent & Solubility
In Vitro: 

DMSO : 100 mg/mL (242.45 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.4245 mL 12.1224 mL 24.2448 mL
5 mM 0.4849 mL 2.4245 mL 4.8490 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
×
Volume
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Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

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

    Solubility: ≥ 2.5 mg/mL (6.06 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

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

    Solubility: ≥ 2.5 mg/mL (6.06 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.4245 mL 12.1224 mL 24.2448 mL 60.6119 mL
5 mM 0.4849 mL 2.4245 mL 4.8490 mL 12.1224 mL
10 mM 0.2424 mL 1.2122 mL 2.4245 mL 6.0612 mL
15 mM 0.1616 mL 0.8082 mL 1.6163 mL 4.0408 mL
20 mM 0.1212 mL 0.6061 mL 1.2122 mL 3.0306 mL
25 mM 0.0970 mL 0.4849 mL 0.9698 mL 2.4245 mL
30 mM 0.0808 mL 0.4041 mL 0.8082 mL 2.0204 mL
40 mM 0.0606 mL 0.3031 mL 0.6061 mL 1.5153 mL
50 mM 0.0485 mL 0.2424 mL 0.4849 mL 1.2122 mL
60 mM 0.0404 mL 0.2020 mL 0.4041 mL 1.0102 mL
80 mM 0.0303 mL 0.1515 mL 0.3031 mL 0.7576 mL
100 mM 0.0242 mL 0.1212 mL 0.2424 mL 0.6061 mL
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Patamostat Related Classifications

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.

Keywords:

Patamostat114568-26-2E-3123E3123E 3123Ser/Thr ProteaseSerine proteasesSerine endopeptidasesThreonine proteasesproteasetrypsinplasminthrombinpathogenesisacutepancreatitisInhibitorinhibitorinhibit

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