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A-803467 is a potent and selective Nav1.8 sodium channel blocker. A-803467 blocks Nav1.8 in both half-maximal inactive and resting states with an IC50 of 8 nM and IC50 of 79 nM, respectively. A-803467 is >100-fold selective vs. human Na(v)1.2, Na(v)1.3, Na(v)1.5, and Na(v)1.7 (IC50 values >or=1 microM). Administration of A-803467 (10-30 mg/kg i.v.) reduced mechanically evoked (10-g von Frey hair) and spontaneous WDR neuronal activity in SNL rats. A-803467 also dose-dependently reduced mechanical allodynia in a variety of rat pain models. A-803467 is the first small-molecule blocker of sodium channels which showing both high potency and significant subtype-selectivity among the sodium channel family.
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Source | Sci Rep (2017). Figure 6. A-803467 |
| Method | Measurement of LSG function | |
| Cell Lines | Left stellate ganglion | |
| Concentrations | 20 mM | |
| Incubation Time | - | |
| Results | As shown in Fig. 6A, the ganglion neurons in the DMSO group were mostly stained positive for TH (red) and negative for TUNEL (green). However, in the high-concentration A-803467 treatment group, most ganglion neurons stained positive for both TH and TUNEL. |
| Molecular Weight | 357.79 |
| Formula | C19H16ClNO4 |
| CAS Number | 944261-79-4 |
| Solubility (25°C) | DMSO 38 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
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