2. Membrane Transporter/Ion Channel Metabolic Enzyme/Protease Apoptosis
  3. Potassium Channel Phosphodiesterase (PDE) Drug Metabolite Apoptosis
  4. OR-1896

OR-1896 is an active long-lived metabolite of Levosimendan. OR-1896 is a highly selective phosphodiesterase (PDE) III isoform inhibitor and a powerful vasodilator. OR-1896 can open ATP-sensitive K+ channels and has Ca2+-sensitizing effect. OR-1896 mitigates cardiomyocyte apoptosis, cardiac remodeling and myocardial inflammation.

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OR-1896 Chemical Structure

OR-1896 Chemical Structure

CAS No. : 220246-81-1

Size Price Stock Quantity
Solid + Solvent
10 mM * 1 mL in DMSO
ready for reconstitution
 USD 308 In-stock
Solution
10 mM * 1 mL in DMSO USD 308 In-stock
Solid
5 mg USD 280 In-stock
10 mg USD 500 In-stock
25 mg USD 1100 In-stock
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Based on 1 publication(s) in Google Scholar

OR-1896 Related Antibodies

Top Publications Citing Use of Products

1 Publications Citing Use of MCE OR-1896

View All Phosphodiesterase (PDE) Isoform Specific Products:

View All Isoforms
PDE1 PDE2 PDE3 PDE4 PDE5 PDE6 PDE7 PDE9 PDE10 PDE11 PDE12 PDE8 Autotaxin

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Description

OR-1896 is an active long-lived metabolite of Levosimendan. OR-1896 is a highly selective phosphodiesterase (PDE) III isoform inhibitor and a powerful vasodilator. OR-1896 can open ATP-sensitive K+ channels and has Ca2+-sensitizing effect. OR-1896 mitigates cardiomyocyte apoptosis, cardiac remodeling and myocardial inflammation[1].

IC50 & Target[1]

PDE3/PDE Ⅲ

 

K+ Channel

 

Drug Metabolite

 

In Vitro

There are many evidences has accumulated and revealed a variety of beneficial pleiotropic effects OR-1896. OR-1896 evokes prominent vasodilatory responses, activation of ATP-sensitive sarcolemmal K+ channels of smooth muscle cells appears as a powerful vasodilator mechanism. Additionally, activation of ATP-sensitive K+ channels in the mitochondria potentially extends the range of cellular actions towards the modulation of mitochondrial ATP production and implicates a pharmacological mechanism for cardioprotection[1].

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

OR-1896 Related Antibodies
In Vivo

During the metabolism of Levosimendan approximately 5% of the drug is converted to the metabolite OR-1855 in the large intestine, and then acetylated in the liver to form the active metabolite OR-1896. Binding to plasma proteins is 98% for Levosimendan but only 40% for OR-1896. Unlike Levosimendan, which has an elimination half-life of 1-1.5 h, the half-life of OR-1896 is about 75 to 80 h allowing cardiovascular effects to persist up to 7 to 9 days after discontinuation of a 24-hour infusion of levosimendan. The pharmacokinetic of the parent drug is unaltered in subjects with severe renal impairment or with moderate hepatic impairment, whereas the elimination of its metabolites (OR-1896) can be prolonged[1].

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

245.28

Formula

C13H15N3O2
CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

CC(NC1=CC=C(C([C@H](C)C2)=NNC2=O)C=C1)=O
Shipping

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

DMSO : 62.5 mg/mL (254.81 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 4.0770 mL 20.3849 mL 40.7697 mL
5 mM 0.8154 mL 4.0770 mL 8.1539 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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

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

Mass
=
Concentration
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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    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (8.48 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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: ≥ 2.08 mg/mL (8.48 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 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).
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, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 4.0770 mL 20.3849 mL 40.7697 mL 101.9243 mL
5 mM 0.8154 mL 4.0770 mL 8.1539 mL 20.3849 mL
10 mM 0.4077 mL 2.0385 mL 4.0770 mL 10.1924 mL
15 mM 0.2718 mL 1.3590 mL 2.7180 mL 6.7950 mL
20 mM 0.2038 mL 1.0192 mL 2.0385 mL 5.0962 mL
25 mM 0.1631 mL 0.8154 mL 1.6308 mL 4.0770 mL
30 mM 0.1359 mL 0.6795 mL 1.3590 mL 3.3975 mL
40 mM 0.1019 mL 0.5096 mL 1.0192 mL 2.5481 mL
50 mM 0.0815 mL 0.4077 mL 0.8154 mL 2.0385 mL
60 mM 0.0679 mL 0.3397 mL 0.6795 mL 1.6987 mL
80 mM 0.0510 mL 0.2548 mL 0.5096 mL 1.2741 mL
100 mM 0.0408 mL 0.2038 mL 0.4077 mL 1.0192 mL
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OR-1896 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:

OR-1896220246-81-1OR1896OR 1896Potassium ChannelPhosphodiesterase (PDE)Drug MetaboliteApoptosisKcsALevosimendanmetabolismcardioprotectionPDE-IIIATP-sensitiveK+-channelsCa2+-sensitizingvasodilatorylong-livedInhibitorinhibitorinhibit

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