R-7050 (TNF-α Antagonist III) is a tumor necrosis factor receptor (TNFR) antagonist with greater selectivity toward TNFα.
CAS Number: 303997-35-5
Molecular Weight: 380.77
TNF-α Antagonist III
Chemical Name: 8-chloro-4-(phenylsulfanyl)-1-(trifluoromethyl)-[1, 2, 4]triazolo[4, 3-a]quinoxaline
Appearance: Solid Power
Purity: ≥98% (or refer to the Certificate of Analysis)
Solubility: DMSO : 25 mg/mL (65.66 mM; Need ultrasonic)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis
Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.
Shelf Life: ≥360 days if stored properly.
Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.
Drug Formulation: To be determined
HS Tariff Code: 382200
How to use
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). 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.
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).
- Gururaja TL, et al. A class of small molecules that inhibit TNFalpha-induced survival and death pathways viaprevention of interactions between TNFalphaRI, TRADD, and RIP1. Chem Biol. 2007 Oct;14(10):1105-18.
- King MD, et al. TNF-alpha receptor antagonist, R-7050, improves neurological outcomes following intracerebralhemorrhage in mice. Neurosci Lett. 2013 May 10;542:92-6.
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