2. Metabolic Enzyme/Protease
  3. Phosphodiesterase (PDE)
  4. K134

K134 is a phosphodiesterase 3 (PDE3) inhibitor. The IC50s of K134 toward PDE3A, PDE3B, PDE5, PDE2 and PDE4 are 0.1, 0.28, 12.1, >300 and >300 µM, respectively.

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K134 Chemical Structure

K134 Chemical Structure

CAS No. : 189362-06-9

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5 mg USD 350 In-stock
10 mg USD 570 In-stock
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50 mg USD 1900 In-stock
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Based on 1 publication(s) in Google Scholar

K134 Related Antibodies

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  • Purity & Documentation

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Description

K134 is a phosphodiesterase 3 (PDE3) inhibitor. The IC50s of K134 toward PDE3A, PDE3B, PDE5, PDE2 and PDE4 are 0.1, 0.28, 12.1, >300 and >300 µM, respectively.

IC50 & Target

IC50: 0.1 µM (PDE3A), 0.28 µM (PDE3B), 12.1 μM (PDE5)[1]
In Vitro

K134 (K-134) inhibits rat platelet aggregation induced by collagen and ADP in a dose-dependent manner in vitro. The half-maximal (50%) inhibitory concentration (IC50) values of K134 are 2.5 µM and 3.2 µM, respectively. In vitro experiments, K134 also inhibits mouse platelet aggregation induced by collagen and ADP in a dose-dependent manner, and the IC50s are 5.5 µM and 6.7 µM, respectively[1].

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

K134 Related Antibodies
In Vivo

K134 (K-134) significantly prolongs middle cerebral artery (MCA) occlusion time at doses >10 mg/kg, and reduces cerebral infarct size at 30 mg/kg in the stroke model (n = 12, 87.5±5.6 vs. 126.8±7.5 mm3, P<0.01), indicating its potent antithrombotic effect. The overall bleeding risk of K134 is assessed in general in mice. Single oral administration of K134 does not prolong bleeding time at a dose of 30 mg/kg compared to control (106±5 vs. 110±5 s, not significant). Moreover, a sufficiently high enough plasma concentration of K134 (13.6±2.3 µM) is detected to inhibit platelet aggregation at 10 min after single administration in mice at a dose of 30 mg/kg, which is the same time point as the above test of bleeding time. Next, the effects of PDE3 inhibitors on thrombus formation are also investigated in an arteriovenous shunt model in rats. K134 significantly reduces the incidence of occlusive shunt thrombi at doses above 10 mg/kg (half-maximal effective dose: ED50=11 mg/kg). The plasma concentration of K134 is 0.43±0.08 µM (Cmax) at a dose of 10 mg/kg[1].

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

399.48

Formula

C22H29N3O4
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=C(NCCCOC1=CC2=C(NC(C=C2)=O)C=C1)N(C3CC3)[C@H]4[C@H](O)CCCC4
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 : 50 mg/mL (125.16 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 2.5033 mL 12.5163 mL 25.0325 mL
5 mM 0.5007 mL 2.5033 mL 5.0065 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
×
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    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.5 mg/mL (6.26 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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% Corn Oil

    Solubility: ≥ 2.5 mg/mL (6.26 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

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

Purity: 99.84%

SDS (252 KB)

COA (246 KB) LCMS (93 KB)

Handling Instructions (2659 KB)
References
Animal Administration
[1]

Mice[1]
Male ICR mice, 5-8 weeks old, are used. K134 (K-134) and Warfarin are suspended and dissolved in 1% HPMC, respectively, and orally administered to ICR mice at 10 min or 24 h before testing of bleeding, respectively. Each mouse is placed in a restrainer, which exposes the tail. A 27G disposable needle is inserted about 6 mm into a tail vein 2 cm from the tip of the tail. Immediately after the operation, sheets of filter paper are placed under the injury site every 15 sec to absorb the blood, and the time point at which no blood is observed on the filter paper is regarded as the bleeding time.

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
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 2.5033 mL 12.5163 mL 25.0325 mL 62.5814 mL
5 mM 0.5007 mL 2.5033 mL 5.0065 mL 12.5163 mL
10 mM 0.2503 mL 1.2516 mL 2.5033 mL 6.2581 mL
15 mM 0.1669 mL 0.8344 mL 1.6688 mL 4.1721 mL
20 mM 0.1252 mL 0.6258 mL 1.2516 mL 3.1291 mL
25 mM 0.1001 mL 0.5007 mL 1.0013 mL 2.5033 mL
30 mM 0.0834 mL 0.4172 mL 0.8344 mL 2.0860 mL
40 mM 0.0626 mL 0.3129 mL 0.6258 mL 1.5645 mL
50 mM 0.0501 mL 0.2503 mL 0.5007 mL 1.2516 mL
60 mM 0.0417 mL 0.2086 mL 0.4172 mL 1.0430 mL
80 mM 0.0313 mL 0.1565 mL 0.3129 mL 0.7823 mL
100 mM 0.0250 mL 0.1252 mL 0.2503 mL 0.6258 mL
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K134 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:

K134189362-06-9OPC33509K 134K-134OPC 33509OPC-33509Phosphodiesterase (PDE)Inhibitorinhibitorinhibit

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