GSK-269984A is a novel and potent Prostaglandin E2 Receptor 1 (EP1) antagonist with a pIC50 of 7.9. GSK269984A was designed to overcome development issues encountered with previous EP(1) antagonists such as GW848687X and was found to display excellent activity in preclinical models of inflammatory pain. However, upon cross species pharmacokinetic profiling, GSK269984A was predicted to have suboptimal human pharmacokinetic and was thus progressed to a human microdose study.
Physicochemical Properties
| Molecular Formula | C20H13NO3FCL2-.NA+ |
| Molecular Weight | 428.21632 |
| Exact Mass | 427.015 |
| CAS # | 892664-04-9 |
| Related CAS # | 892664-17-4 (GSK-269984B) |
| PubChem CID | 23696973 |
| Appearance | White to off-white solid powder |
| LogP | 4.06 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 6 |
| Heavy Atom Count | 28 |
| Complexity | 504 |
| Defined Atom Stereocenter Count | 0 |
| InChi Key | ROPHIKMBWGQPQO-UHFFFAOYSA-M |
| InChi Code | InChI=1S/C20H14Cl2FNO3.Na/c21-14-6-7-19(27-11-12-4-5-15(22)10-17(12)23)13(8-14)9-16-2-1-3-18(24-16)20(25)26;/h1-8,10H,9,11H2,(H,25,26);/q;+1/p-1 |
| Chemical Name | 2-Pyridinecarboxylic acid, 6-((5-chloro-2-((4-chloro-2-fluorophenyl)methoxy)phenyl)methyl)-, sodium salt |
| Synonyms | GSK-269984A; GSK269984A; GSK 269984A |
| 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) |
Biological Activity
| ln Vitro | GSK-269984A has a pIC50 of 7.9 and is an antagonist of the EP1 receptor, according to the [3H]-PGE2 binding experiment conducted in CHO cells overexpressing the human EP1 receptor. The PGE2 dose-response curve was observed to move to the right in a concentration-dependent manner when GSK-269984A was added. Schild analysis revealed that GSK-269984A is a competitive antagonist with a pA2 of 8.1±0.3 and a slope of 1.0 [1]. |
| ln Vivo | The oral ED50 of GSK-269984A is 2.6 mg/kg, and the hypersensitivity reversal observed at the 10 mg/kg dose was similar to that of the standard. According to the half-lives in each species, GSK-269984A demonstrated moderate blood clearance in dogs and rats and high clearance in monkeys [1]. |
| References |
[1]. Discovery of sodium 6-[(5-chloro-2-{[(4-chloro-2-fluorophenyl)methyl]oxy}phenyl)methyl]-2-pyridinecarboxylate (GSK269984A) an EP(1) receptor antagonist for the treatment of inflammatory pain. Bioorg Med Chem Lett. 2009 May 1;19(9):2599-603. |
Solubility Data
| Solubility (In Vitro) | DMSO : ~7 mg/mL (~16.31 mM) |
| Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *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. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently. (Please use freshly prepared in vivo formulations for optimal results.) |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 2.3352 mL | 11.6762 mL | 23.3525 mL | |
| 5 mM | 0.4670 mL | 2.3352 mL | 4.6705 mL | |
| 10 mM | 0.2335 mL | 1.1676 mL | 2.3352 mL |