1. Apoptosis
  2. TNF Receptor
  3. R-7050

R-7050 (Synonyms: TNF-α Antagonist III)

Cat. No.: HY-110203 Purity: 98.83%
Handling Instructions

R-7050 (TNF-α Antagonist III) is a tumor necrosis factor receptor (TNFR) antagonist with greater selectivity toward TNFα.

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

R-7050 Chemical Structure

R-7050 Chemical Structure

CAS No. : 303997-35-5

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Free Sample (0.5-1 mg)   Apply now  
10 mM * 1 mL in DMSO USD 77 In-stock
Estimated Time of Arrival: December 31
5 mg USD 70 In-stock
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10 mg USD 120 In-stock
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25 mg USD 240 In-stock
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50 mg USD 410 In-stock
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100 mg USD 690 In-stock
Estimated Time of Arrival: December 31
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Customer Review

Based on 1 publication(s) in Google Scholar

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R-7050 (TNF-α Antagonist III) is a tumor necrosis factor receptor (TNFR) antagonist with greater selectivity toward TNFα.

IC50 & Target[1]



In Vitro

R-7050 (TNF-α Antagonist III) is a potent and fully reversible hit with greater selectivity toward TNFα. In TNFα-induced intercellular adhesion molecule 1 (ICAM-1) expression, R-7050 inhibition potency (EC50=0.63 μM) is 2- to 3-fold greater than EC50 for IL-1β-induced ICAM-1 expression (EC50=1.45 2 μM). R-7050 inhibits phosphorylation of both the JNK pathway (MKK4, JNKs, and ATF2) and p38 pathway (MKK3/6, p38, and MAPKAP2)[1]. R-7050 is a cell-permeable triazoloquinoxaline compound that selectively inhibits TNF-α induced cellular signaling. Unlike biologic TNF inhibitors (e.g. Infliximab, Etanercept, Adalimumab) that directly bind TNF-α and function as decoy receptors, R-7050 does not affect binding of TNF-α to TNFR. In contrast, R-7050 selectively inhibits the association of TNFR with intracellular adaptor molecules (e.g. TRADD, RIP), limits receptor internalization, and prevents subsequent cellular responses after TNF-α binding[2].

In Vivo

R-7050 (TNF-α Antagonist III) (6 mg/kg) reduces Evans blue extravasation to 28.7±5.9 μg and 30.3±1.9 μg Evans blue/g brain tissue when administered at 0.5 h or 2 h post-ICH, respectively (p<0.05 and p<0.01 vs ICH, respectively; not significantly different from sham). Brain water content, a measure of brain edema, increases from 75.6±0.3% in sham-operated mice to 81.5±0.5% at 24h post-ICH (p<0.05 vs. sham). 6, 12, or 18 mg/kg R-7050 reduces brain water content to 78.5±0.3%, 78.3±0.3%, or 79.3±0.5%, respectively (all treatments p<0.05 vs. ICH; treatments not significantly different from each other). Notably, mice treated with 18 mg/kg exhibit a reduction in general activity/locomotion. As is observed with Evans blue extravasation, R-7050 (6 mg/kg) significantly reduces brain water content after ICH. Administration of R-7050 at 0.5h or 2h post-ICH attenuates brain water content to levels observed in sham-operated mice (p<0.05 vs ICH, not significantly different from sham)[2].

Molecular Weight









Room temperature in continental US; may vary elsewhere

Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 25 mg/mL (65.66 mM; Need ultrasonic)

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.6263 mL 13.1313 mL 26.2626 mL
5 mM 0.5253 mL 2.6263 mL 5.2525 mL
10 mM 0.2626 mL 1.3131 mL 2.6263 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: 2.5 mg/mL (6.57 mM); Suspended solution; Need ultrasonic

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 2.5 mg/mL (6.57 mM); Clear solution

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (6.57 mM); Clear solution

*All of the co-solvents are provided by MCE.
Animal Administration

A mouse collagenase model of ICH is utilized. Briefly, male CD-1 mice (8-10 weeks old) are placed into a stereotactic frame and a 0.5 mm diameter burr hole is drilled over the parietal cortex, 2.2 mm lateral to the bregma. A 26-gauge Hamilton syringe, loaded with 0.04 U of bacterial type IV collagenase in 0.5 μL saline, is lowered 3 mm deep from the skull surface directly into the left striatum. The syringe is depressed at a rate of 450 nL/min and left in place for several minutes after the procedure to prevent solution reflux and excess diffusion. Sham animals undergo the same surgical procedure, except that saline is stereotactically injected rather than collagenase. After the syringe is removed, bone wax is used to close the burr hole, the incision is surgically stapled, and mice are kept warm until recovery of the righting reflex. R-7050 (6-18 mg/kg) is administered via intraperitoneal route at the time of injury or up to 2 h post-ICH[2].

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

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