Molecular Weight(MW): 255.27
Ketorolac (Ketorolac tromethamine) is a non-selective COX inhibitor of COX-1 and COX-2 with IC50 of 1.23 μM and 3.50 μM, respectively.
Purity & Quality Control
Choose Selective COX Inhibitors
|Description||Ketorolac (Ketorolac tromethamine) is a non-selective COX inhibitor of COX-1 and COX-2 with IC50 of 1.23 μM and 3.50 μM, respectively.|
|Features||A COX-1 preferential inhibitor among currently marked nonsteroidal anti-inflammatory drugs (NSAIDs).|
(R, S)-, (S)-, and (R)-Ketorolac inhibit both isoforms of COX in recombinant rat and human enzyme systems, and similar as inhibitors of rat COX (rCOX) and human COX (hCOX) under the conditions used. (R, S)-Ketorolac inhibits rat COX-1, rat COX-2, human COX-1 and human COX-2 with IC50 of 0.27 μM, 2.06 μM, 1.23 μM and 3.50 μM, respectively. The (S) enantiomer of Ketorolac with IC50 of 0.10 μM for rat COX-1 is approximately twice as potent as the racemate, whereas the (R)-enantiomer with IC50 of > 100 μM is virtually without activity.  Ketorolac shows inhibition of eicosanoid formation in HEL cells (COX-1) and LPS-stimulated Mono Mac 6 cells (COX-2) with IC50 of 0.025 μM and 0.039 μM, respectively, but does not significantly inhibit NO accumulation in supernatants of LPS-stimulated RAW 264.7 cells up to 300 μM.  Ketorolac significantly inhibits thymidine incorporation of human osteoblasts (hOBs) upon 24 hours treatment in a dose-dependent manner, and inhibits proliferation and arrests cell cycle at G0/G1 phase in hOBs. 
|In vivo||(R, S)-Ketorolac is significantly more potent than indomethacin or diclofenac sodium in tests of acetic acid-induced writhing, carrageenan-induced paw hyperalgesia, and carrageenan-induced edema formation in rats, with ID50 of 0.24, 0.29 and 0.08 mg/kg, respectively.  Ketorolac produces significant inhibition of COX-1 activity and gastric PG synthesis with doses of ≥1 mg/kg inhibiting COX-1 activity by 95% and gastric PG synthesis by >88%. Ketorolac does not significantly affect COX-2 activity at doses of ≤3 mg/kg, but at doses of 10 and 30 mg/kg, Ketorolac produces significant inhibition of COX-2 activity by 75% and 91%, respectively. Ketorolac causes gastric damage in rats only at doses that inhibits both COX-1 and COX-2, or when given with a COX-2 inhibitor. |
Inhibition of Prostaglandin Formation:Recombinant COX-1 and COX-2 from rat (rCOX) and human (hCOX) expressed in a baculovirus system are purified and reconstituted with 2 mM phenol and 1 μM hematin. Then the cyclooxygenase activity is measured using a radiometric assay, and the specific activity of the final enzyme preparations used is between 20,000 and 35,000 units. Ketorolac (2 -15 μL) are diluted in DMSO and preincubated with the appropriate recombinant COX (3 -15 ng) at a final concentration of 0.01 to 1000 μM in a reaction mixture (150 μL) containing 50 mM Tris-HCl buffer (pH 7.9), 2 mM EDTA, 10% glycerol, 2 mM phenol, and 1 μM hematin for 10 minutes. The reaction is initiated by addition of [14C]arachidonic acid (50–60 mCi/mmol in a final concentration of 20 μM) and is terminated 45 seconds later by the addition of 100 μL of 0.2 N HCl and 750 μL of distilled water. The total reaction volume is then applied to a 1 mL C18 Sep-pak column that has previously been washed with 2 mL of methanol followed by 5 mL of deionized water. Oxygenated products are eluted with 3 mL of a mixture of acetonitrile/water/acetic acid (50:50:0.1, v/v/v) and quantified by liquid scintillation spectroscopy.
|In vitro||DMSO||75 mg/mL (293.8 mM)|
|Ethanol||75 mg/mL warmed (293.8 mM)|
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).
Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
Enter the chemical formula of a compound to calculate its molar mass and elemental composition:
Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2
Instructions to calculate molar mass (molecular weight) of a chemical compound:
To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT03137498||Recruiting||Renal Colic||The Brooklyn Hospital Center||March 6 2017||Phase 4|
|NCT03319784||Not yet recruiting||Rotator Cuff Tear|Rotator Cuff Injury|Rotator Cuff Tendinitis|Diabetes Mellitus||Milton S. Hershey Medical Center||September 5 2018||Phase 4|
|NCT03472872||Enrolling by invitation||Headache||Lakeland Health|Michigan State University||September 5 2017||Phase 4|
|NCT03638999||Recruiting||Ureteral Stent Placement|Kidney Stone||Washington University School of Medicine||July 31 2018||Early Phase 1|
|NCT03426137||Not yet recruiting||Rib Fractures|Opioid Use|Opioid-Related Disorders||University of Maryland||July 31 2018||Phase 2|
|NCT03178539||Recruiting||Pain Acute||Assiut University||May 31 2017||Phase 2|Phase 3|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
Tel: +1-832-582-8158 Ext:3
If you have any other enquiries, please leave a message.