1. GPCR/G Protein
  2. Prostaglandin Receptor
  3. Grapiprant

Grapiprant  (Synonyms: CJ-023423; RQ-00000007; AAT-007)

Cat. No.: HY-16781 Purity: 99.57%
COA Handling Instructions

Grapiprant (CJ-023423) is a selective EP4 receptor antagonist whose physiological ligand is prostaglandin E2 (PGE2). Grapiprant displaces [3H]-PGE2 (1 nM) binding to dog recombinant EP4 receptor with IC50 value of 35 nM and Ki value of 24 nM. Grapiprant has the potential for osteoarthritic pain and inflammation treatment[3] .

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

Grapiprant Chemical Structure

Grapiprant Chemical Structure

CAS No. : 415903-37-6

Size Price Stock Quantity
Solid + Solvent (Highly Recommended)
10 mM * 1 mL in DMSO
ready for reconstitution
USD 99 In-stock
Solution
10 mM * 1 mL in DMSO USD 99 In-stock
Solid
1 mg USD 36 In-stock
5 mg USD 90 In-stock
10 mg USD 150 In-stock
25 mg USD 250 In-stock
50 mg USD 450 In-stock
100 mg USD 720 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 4 publication(s) in Google Scholar

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  • Biological Activity

  • Purity & Documentation

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Description

Grapiprant (CJ-023423) is a selective EP4 receptor antagonist whose physiological ligand is prostaglandin E2 (PGE2). Grapiprant displaces [3H]-PGE2 (1 nM) binding to dog recombinant EP4 receptor with IC50 value of 35 nM and Ki value of 24 nM. Grapiprant has the potential for osteoarthritic pain and inflammation treatment[1][2][3] .

IC50 & Target[2]

dog EP4

35 nM (IC50)

dog EP4

24 nM (Ki)

In Vivo

Grapiprant (0-50 mg/kg; oral administration; every 24 hours; for 9 months; beagles) is safe for dogs by long-term oral administration. Efficacy of Grapiprant in the treatment of dogs with osteoarthritis needs to be evaluated in other studies[3] .

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

Animal Model: 36 beagles of both sexes (9-month-old)[3]
Dosage: 0 mg/kg, 1 mg/kg, 6 mg/kg, or 50 mg/kg
Administration: Oral administration; every 24 hours; for 9 months
Result: Long-term oral administration was safe for dogs.
Clinical Trial
Molecular Weight

491.61

Formula

C26H29N5O3S

CAS No.
Appearance

Solid

Color

White to off-white

SMILES

O=S(C1=CC=C(C)C=C1)(NC(NCCC2=CC=C(N3C(CC)=NC4=C3C=C(C)N=C4C)C=C2)=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 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 50 mg/mL (101.71 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.0341 mL 10.1707 mL 20.3413 mL
5 mM 0.4068 mL 2.0341 mL 4.0683 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
×
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: ≥ 3 mg/mL (6.10 mM); Clear solution

    This protocol yields a clear solution of ≥ 3 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (30.0 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: ≥ 3 mg/mL (6.10 mM); Clear solution

    This protocol yields a clear solution of ≥ 3 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (30.0 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).
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: 99.57%

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 2.0341 mL 10.1707 mL 20.3413 mL 50.8533 mL
5 mM 0.4068 mL 2.0341 mL 4.0683 mL 10.1707 mL
10 mM 0.2034 mL 1.0171 mL 2.0341 mL 5.0853 mL
15 mM 0.1356 mL 0.6780 mL 1.3561 mL 3.3902 mL
20 mM 0.1017 mL 0.5085 mL 1.0171 mL 2.5427 mL
25 mM 0.0814 mL 0.4068 mL 0.8137 mL 2.0341 mL
30 mM 0.0678 mL 0.3390 mL 0.6780 mL 1.6951 mL
40 mM 0.0509 mL 0.2543 mL 0.5085 mL 1.2713 mL
50 mM 0.0407 mL 0.2034 mL 0.4068 mL 1.0171 mL
60 mM 0.0339 mL 0.1695 mL 0.3390 mL 0.8476 mL
80 mM 0.0254 mL 0.1271 mL 0.2543 mL 0.6357 mL
100 mM 0.0203 mL 0.1017 mL 0.2034 mL 0.5085 mL
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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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Product Name:
Grapiprant
Cat. No.:
HY-16781
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