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Ebopiprant (OBE022)

Cat No.:V31937 Purity: ≥98%
Ebopiprant (OBE-022) is afirst-in-class,potent, orally bioavailable and selective prostaglandin F2α (PGF2α) receptor antagonist, with Kis of 1 nM, 26 nM for human and rat FP receptors, respectively.
Ebopiprant (OBE022)
Ebopiprant (OBE022) Chemical Structure CAS No.: 2005486-31-5
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
1mg
5mg
10mg
Other Sizes

Other Forms of Ebopiprant (OBE022):

  • OBE022
Official Supplier of:
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Top Publications Citing lnvivochem Products
Product Description

Ebopiprant (OBE-022) is a first-in-class, potent, orally bioavailable and selective prostaglandin F2α (PGF2α) receptor antagonist, with Kis of 1 nM, 26 nM for human and rat FP receptors, respectively. It was designed to control preterm labour by reducing inflammation and uterine contractions as well as preventing cervical changes and fetal membrane rupture without causing the potentially serious vasoconstriction in the foetus.

Biological Activity I Assay Protocols (From Reference)
ln Vitro
Using HEK293 cells that were transfected with the FP receptor and subjected to a competitive binding experiment with 3H-PGF2α, the FP binding affinity of Ebopiprant (OBE022) and OBE002 was ascertained. OBE022 has binding affinities (Ki) of 1 nM for human and 26 nM for rat FP receptors, respectively. The Ki values for OBE002 are 6 nM for the human FP receptor and 313 nM for the rat FP receptor. OBE022 and OBE002 bind reversibly and competitively because, when the concentration of either compound is increased, the slope of the binding curve continuously decreases. This is consistent with an increase in the equilibrium dissociation constant (KD) without a corresponding decrease in receptor density [1].
ln Vivo
Time course of cumulative percent delivery in mice treated with OBE022, nifedipine, or vehicle following RU486-induced GD17 preterm birth. An oral OBE022 medication postponed the RU486-induced preterm labor, as evidenced by a shift to the right in the percent labor curve. Oral therapy is equally efficacious as nifedipine. The duration until the first pup delivery increased in both OBE022 and nifedipine. One significant outcome of the longer gestation period is that the mother rat can give birth to healthy pups. When compared to OBE022 or nifedipine alone, there was a more noticeable shift to the right in the percentage labor curve, indicating that the combination of the two medications worked synergistically to postpone RU486-induced preterm labor. Furthermore, a significant increase in the first pup's birth time was noted [1].
References

[1]. OBE022, an oral and selective prostaglandin F2α receptor antagonist as an effective and safe modality for the treatment of preterm labor. J Pharmacol Exp Ther. 2018 Aug;366(2):349-364.

Additional Infomation
Ebopiprant is under investigation in clinical trial NCT03369262 (Poc Study of OBE022 in Threatened Preterm Labour).
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C30H34FN3O5S2
Molecular Weight
599.736468791962
Exact Mass
599.192
CAS #
2005486-31-5
Related CAS #
2005486-31-5;2005486-32-6 (HCl);2005486-34-8 (fumarate);2005486-33-7 (sulfate); 2005486-42-8; 2005486-37-1 (citrate); 2005486-38-2 (esylate);
PubChem CID
122522051
Appearance
White to light yellow solid powder
LogP
4.9
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
9
Rotatable Bond Count
12
Heavy Atom Count
41
Complexity
956
Defined Atom Stereocenter Count
3
SMILES
S(C1C=CC(C2C=CC=CC=2)=CC=1)(N1CCS[C@H]1C(N[C@H](C1C=CC(=CC=1)F)CCOC([C@H](C(C)C)N)=O)=O)(=O)=O
InChi Key
UUIBKACUTXYSAK-YCVJPRETSA-N
InChi Code
InChI=1S/C30H34FN3O5S2/c1-20(2)27(32)30(36)39-18-16-26(23-8-12-24(31)13-9-23)33-28(35)29-34(17-19-40-29)41(37,38)25-14-10-22(11-15-25)21-6-4-3-5-7-21/h3-15,20,26-27,29H,16-19,32H2,1-2H3,(H,33,35)/t26-,27-,29-/m0/s1
Chemical Name
[(3S)-3-(4-fluorophenyl)-3-[[(2S)-3-(4-phenylphenyl)sulfonyl-1,3-thiazolidine-2-carbonyl]amino]propyl] (2S)-2-amino-3-methylbutanoate
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : ~250 mg/mL (~416.85 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.08 mg/mL (3.47 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: 2.08 mg/mL (3.47 mM) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 2.08 mg/mL (3.47 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 20.8 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 1.6674 mL 8.3369 mL 16.6739 mL
5 mM 0.3335 mL 1.6674 mL 3.3348 mL
10 mM 0.1667 mL 0.8337 mL 1.6674 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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