Naproxen Sodium

Catalog No.S1626 Batch:S162602

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Technical Data

Formula

C14H13NaO3
Molecular Weight 252.24 CAS No. 26159-34-2
Solubility (25°C)* In vitro Water 50 mg/mL (198.22 mM)
DMSO 10 mg/mL (39.64 mM)
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Naproxen Sodium (RS-3650) is a COX inhibitor for COX-1 and COX-2 with IC50 of 8.7 μM and 5.2 μM, respectively.
Targets
COX-2 [1] COX-1 [1]
5.2 μM 8.7 μM
In vitro Naproxen is approximately equipotent inhibitor of COX-1 and COX-2 in intact cells with IC50 of 2.2 μg/mL and 1.3 μg/mL, respectively. [1] Naproxen decreases the in vitro LPS-induced PGE2 and TXB2 production in rats and humans with IC50 of 30.7 μM and 79.5 μM for PGE2 inhibition, 72.4 μM and 48.3 μM for TXB2 inhibition, respectively. [2] Naproxen produces concentration-related inhibition of TXB2 production from human platelets and LPS-induced TXB2 production from human mononuclear cells with plC50 values (-log concentration inhibiting TXB2 by 50%) of 5.7 and 6.4, respectively, and exhibits slightly inhibitory selectivity for constitutive and induced COX-2 with IC50 COX-1/IC50 COX-2 of 6.3. [3] Only high concentration of Naproxen can significantly induce apoptosis at 48 hours in HCA-7 colon cancer cells with IC50 of 1.45 mM. [4]
In vivo Administration of Naproxen reduces the LPS-induced PGE2 and TXB2 production in vivo in rats with IC50 values of 12.8 μM and 5.9 μM, respectively, which represents that Naproxen is a nonselective COX inhibitor with the log IC50 ratio (COX-2/COX-1) of 0.34. [2] Naproxen displays IC50 of 27 μM for analgesia in a rat model with carrageenan-induced arthritis and IC50 of 40 μM for antipyretics in a yeast-induced fever rat model, while exhibits inhibition of PGE2 with IC50 of 13 μM and TXB2 with IC50 of 5 μM. [5]
Features Displays approximately equipotent inhibitory selectivity for COX-1 and COX-2 in intact cells.

Protocol (from reference)

Kinase Assay:[1]
  • COX-1 and COX-2 activities in intact cells

    For the determination of COX-1 and COX-2 inhibition, bovine aortic endothelial cells (BAEC) are incubated for 30 minutes with Naproxen (0.1 ng/mL to 1 mg/mL), and cultured J774.2 macrophages are treated with endotoxin at 1 μg/mL for 12 hours to induce COX-2 followed by incubated for 30 minutes with Naproxen (0.1 ng/mL to 1 mg/mL), respectively. Arachidonic acid (30 μM) is then added, and the cells are incubated for a further 15 minutes at 37 °C. The medium is then removed, and radioimmunoassay is used to measure the formation of 6-keto-PGF1α, PGE2, thromboxane B2, or PGF2α for the assessment of IC50 for COX-1 and COX-2.
Cell Assay:[4]
  • Cell lines

    Human colon cancer HCA-7 cell lines

  • Concentrations

    Dissolved in culture medium, final concentration ~20 mM

  • Incubation Time

    24 and 48 hours

  • Method

    Cells are exposed to Naproxen for 24 and 48 hours, respectively. At the end of incubation, cells are harvested by trypsinization, stained with trypan blue solution (0.04% wt/vol) and counted in a Neubauer haemocytometer chamber for the determination of cell viability.
Animal Study:[2]
  • Animal Models

    Male Sprague-Dawley rats

  • Dosages

    2.5, 10 or 25 mg/kg

  • Administration

    Intravenously (i.v.) infusion or intraperitoneal (i.p.) injection

Selleck's Naproxen Sodium has been cited by 2 publications

Project IDentif.AI: Harnessing Artificial Intelligence to Rapidly Optimize Combination Therapy Development for Infectious Disease Intervention [ Adv Ther (Weinh), 2020, 2000034] PubMed: 32838027
Strain-Dependent Variability of Early Discovery Small Molecule Pharmacokinetics in Mice: Does Strain Matter? [ Drug Metab Dispos, 2020, 48(8):613-621] PubMed: 32474442

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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