2. GPCR/G Protein
  3. Prostaglandin Receptor
  4. Timapiprant

Timapiprant  (Synonyms: OC000459)

Cat. No.: HY-15342 Purity: 99.48%
SDS COA Handling Instructions

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Timapiprant (OC000459) is a potent, selective, and orally active D prostanoid receptor 2 (DP2, also known as CRTH2) antagonist. Timapiprant (OC000459) potently displaces [3H] PGD2 from human recombinant DP2 (Ki=13 nM), rat recombinant DP2 (Ki=3 nM), and human native DP2 (Ki=4 nM). Timapiprant (OC000459) inhibits mast cell activation of Th2 lymphocytes and eosinophils.

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Timapiprant Chemical Structure

Timapiprant Chemical Structure

CAS No. : 851723-84-7

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Based on 3 publication(s) in Google Scholar

Other Forms of Timapiprant:

Timapiprant Related Antibodies

Top Publications Citing Use of Products

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  • Purity & Documentation

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Description

Timapiprant (OC000459) is a potent, selective, and orally active D prostanoid receptor 2 (DP2, also known as CRTH2) antagonist. Timapiprant (OC000459) potently displaces [3H] PGD2 from human recombinant DP2 (Ki=13 nM), rat recombinant DP2 (Ki=3 nM), and human native DP2 (Ki=4 nM). Timapiprant (OC000459) inhibits mast cell activation of Th2 lymphocytes and eosinophils[1].

IC50 & Target

Ki: 0.013 μM (human recombinant DP2); 0.003 μM (rat recombinant DP2) and 0.004 μM (human native DP2)[1]
Cellular Effect
Cell Line Type Value Description References
CHO-K1 IC50
130 nM
Compound: 17
Antagonist activity at CRTh2 receptor (unknown origin) overexpressed in CHOK1 cell membranes assessed as inhibition of [35S]-GTPgammaS binding preincubated for 1 hr followed by 50 nM PGD2 and 0.1 nM [35S]-GTPgammaS addition measured after 2 hrs by liquid
Antagonist activity at CRTh2 receptor (unknown origin) overexpressed in CHOK1 cell membranes assessed as inhibition of [35S]-GTPgammaS binding preincubated for 1 hr followed by 50 nM PGD2 and 0.1 nM [35S]-GTPgammaS addition measured after 2 hrs by liquid
[PMID: 23601708]
In Vitro

Timapiprant (OC000459) (0.0001 μM-10 μM; 5 hours) inhibits chemotaxis (IC50=0.028 μM) of human Th2 lymphocytes and cytokine production (IC50=0.019 μM) by human Th2 lymphocytes[1].
Timapiprant (OC000459) (1 μM) inhibits the activation of Th2 cells and eosinophils in response to supernatants from IgE/anti-IgE-activated human mast cells[1].
Timapiprant (OC000459) (1 nM–1000 nM; 16 hours) inhibits the anti-apoptotic effect of PGD2 on Th2 cells with an IC50 of 0.035 uM[1].

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

Timapiprant Related Antibodies

Apoptosis Analysis[1]

Cell Line: Th2 Cells
Concentration: 0.0001 μM-10 μM
Incubation Time: 16 hours
Result: Inhibited the antiapoptotic effect of PGD2.
In Vivo

Timapiprant (OC000459) (gavage; 2 mg/kg, 10 mg/kg) inhibits blood eosinophilia induced by 13,14-dihydro-15-keto-PGD2 (DK-PGD2) in Rat (ED50=0.04 mg/kg)[1].
Timapiprant (OC000459) (gavage; 0.01 mg/kg, 0.1 mg/kg, 1.0 mg/kg) inhibits airway eosinophilia in response to an aerosol of DK-PGD2 in guinea pigs (ED50=0.01 mg/kg)[1].

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

348.37

Formula

C21H17FN2O2
CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C(O)CN1C(C)=C(CC2=NC3=CC=CC=C3C=C2)C4=C1C=CC(F)=C4
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, stored under nitrogen

*In solvent : -80°C, 6 months; -20°C, 1 month (stored under nitrogen)

Solvent & Solubility
In Vitro: 

DMSO : 10 mg/mL (28.71 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : < 0.1 mg/mL (insoluble)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.8705 mL 14.3526 mL 28.7051 mL
5 mM 0.5741 mL 2.8705 mL 5.7410 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 (stored under nitrogen). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

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

Mass
=
Concentration
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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

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Volume (start)

V1

=
Concentration (final)

C2

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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: ≥ 0.4 mg/mL (1.15 mM); Clear solution

    This protocol yields a clear solution of ≥ 0.4 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (4.0 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.
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 (stored under nitrogen)

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: 99.48%

SDS (252 KB)

COA (252 KB) LCMS (98 KB)

Handling Instructions (2659 KB)
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 (stored under nitrogen). 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 2.8705 mL 14.3526 mL 28.7051 mL 71.7628 mL
5 mM 0.5741 mL 2.8705 mL 5.7410 mL 14.3526 mL
10 mM 0.2871 mL 1.4353 mL 2.8705 mL 7.1763 mL
15 mM 0.1914 mL 0.9568 mL 1.9137 mL 4.7842 mL
20 mM 0.1435 mL 0.7176 mL 1.4353 mL 3.5881 mL
25 mM 0.1148 mL 0.5741 mL 1.1482 mL 2.8705 mL
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Timapiprant 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:

Timapiprant851723-84-7OC000459OC 000459OC-000459Prostaglandin ReceptorInhibitorinhibitorinhibit

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