A 887826voltage-dependent Nav1.8 sodium channel blocker CAS# 1266212-81-0 |
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Quality Control & MSDS
Number of papers citing our products
Chemical structure
3D structure
| Cas No. | 1266212-81-0 | SDF | Download SDF |
| PubChem ID | 46919335 | Appearance | Powder |
| Formula | C26H29ClN4O3 | M.Wt | 480.99 |
| Type of Compound | N/A | Storage | Desiccate at -20°C |
| Solubility | Soluble to 50 mM in DMSO | ||
| Chemical Name | 5-(4-butoxy-3-chlorophenyl)-N-[(2-morpholin-4-ylpyridin-3-yl)methyl]pyridine-3-carboxamide | ||
| SMILES | CCCCOC1=C(C=C(C=C1)C2=CC(=CN=C2)C(=O)NCC3=C(N=CC=C3)N4CCOCC4)Cl | ||
| Standard InChIKey | JPJGFWKHSMUKFO-UHFFFAOYSA-N | ||
| Standard InChI | InChI=1S/C26H29ClN4O3/c1-2-3-11-34-24-7-6-19(15-23(24)27)21-14-22(17-28-16-21)26(32)30-18-20-5-4-8-29-25(20)31-9-12-33-13-10-31/h4-8,14-17H,2-3,9-13,18H2,1H3,(H,30,32) | ||
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months. We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months. Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it. |
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| About Packaging | 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial. 2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial. 3. Try to avoid loss or contamination during the experiment. |
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| Shipping Condition | Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request. | ||
| Description | Potent voltage-dependent NaV1.8 channel blocker (IC50 = 11 nM in recombinant human NaV1.8 channels). Reduces tactile allodynia in neuropathic rat models. 3- and 28-fold more potent at NaV1.8 channels compared to NaV1.2 and NaV1.7 channels respectively. |
A 887826 Dilution Calculator
A 887826 Molarity Calculator
| 1 mg | 5 mg | 10 mg | 20 mg | 25 mg | |
| 1 mM | 2.079 mL | 10.3952 mL | 20.7905 mL | 41.5809 mL | 51.9761 mL |
| 5 mM | 0.4158 mL | 2.079 mL | 4.1581 mL | 8.3162 mL | 10.3952 mL |
| 10 mM | 0.2079 mL | 1.0395 mL | 2.079 mL | 4.1581 mL | 5.1976 mL |
| 50 mM | 0.0416 mL | 0.2079 mL | 0.4158 mL | 0.8316 mL | 1.0395 mL |
| 100 mM | 0.0208 mL | 0.104 mL | 0.2079 mL | 0.4158 mL | 0.5198 mL |
| * Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations. | |||||
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A 887826 is a potent and voltage-dependent Nav1.8 sodium channel blocker. It blocked recombinant human Nav1.8 channels with an IC50 value of 11nM [1].
Voltage-gated sodium channels are important in the generation and propagation of action potential. At least 9 genes encode functional sodium channels, namely Nav1.1-Nav1.9. Nav1.8 is a TTX-resistant (TTX-R) sodium channel. Nav1.8 is highly localized on primary sensory afferent neurons. Nav1.8 is involved in the processing of nociceptive information.
-100 mV without prepulse did make a resting state for rat DRG neurons. Prepulse to -40 mV did make an inactivated state for channels. In rat DRG neurons in these two states, treatment with A 887826 at 1 µM significantly blocked TTXR Na+ currents. A 887826 blocked TTX-R Na+ currents with an IC50 value of 7.9 ± 0.2 nM (n= 5~9) when channels were in an inactivated state (-40 mV). A 887826 showed an IC50 value of 63.6 ± 0.2 nM (n=5~9) to less depolarized (at -60, -80 or -100 mV) TTX-R Na+ currents. That meant A 887826 state-dependently blocked TTX-R Na+ currents [1].
Knockdown of Nav1.8 caused a significant reduction in mechanical hyperalgesia and allodynia in rat models of inflammatory and neuropathic pain. Suppression of Nav1.8 expression also reduced visceral pain in several experimental models. Activation of Nav1.8 sodium channels primarily drove nociceptor excitability under cold conditions. A rat spinal nerve ligation model of neuropathic pain was used. Oral administration with A 887826 dose-dependently attenuated tactile allodynia in this pain model. The range of free plasma concentrations of A 887826 to produce analgesic efficacy in a spinal nerve ligation model was 3-10 nM. This was consistent with the IC50 value for blocking rat DRG TTX-R sodium currents [1].
Reference:
[1]. Zhang XF, Shieh CC, Chapman ML, et al. A-887826 is a structurally novel, potent and voltage-dependent NaV1.8 sodium channel blocker that attenuates neuropathic tactile allodynia in rats. Neuropharmacology, 2010, 59(3): 201-207.
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A-887826 is a structurally novel, potent and voltage-dependent Na(v)1.8 sodium channel blocker that attenuates neuropathic tactile allodynia in rats.[Pubmed:20566409]
Neuropharmacology. 2010 Sep;59(3):201-7.
Activation of sodium channels is essential to action potential generation and propagation. Recent genetic and pharmacological evidence indicates that activation of Na(v)1.8 channels contributes to chronic pain. Herein, we describe the identification of a novel series of structurally related pyridine derivatives as potent Na(v)1.8 channel blockers. A-887826 exemplifies this series and potently (IC(50)=11nM) blocked recombinant human Na(v)1.8 channels. A-887826 was approximately 3 fold less potent to block Na(v)1.2, approximately 10 fold less potent to block tetrodotoxin-sensitive sodium (TTX-S Na(+)) currents and was >30 fold less potent to block Na(V)1.5 channels. A-887826 potently blocked tetrodotoxin-resistant sodium (TTX-R Na(+)) currents (IC(50)=8nM) from small diameter rat dorsal root ganglion (DRG) neurons in a voltage-dependent fashion. A-887826 effectively suppressed evoked action potential firing when DRG neurons were held at depolarized potentials and reversibly suppressed spontaneous firing in small diameter DRG neurons from complete Freund's adjuvant inflamed rats. Following oral administration, A-887826 significantly attenuated tactile allodynia in a rat neuropathic pain model. Further characterization of TTX-R current block in rat DRG neurons demonstrated that A-887826 (100nM) shifted the mid-point of voltage-dependent inactivation of TTX-R currents by approximately 4mV without affecting voltage-dependent activation and did not exhibit frequency-dependent inhibition. The present data demonstrate that A-887826 is a structurally novel and potent Na(v)1.8 blocker that inhibits rat DRG TTX-R currents in a voltage-, but not frequency-dependent fashion. The ability of this structurally novel Na(v)1.8 blocker to effectively reduce tactile allodynia in neuropathic rats further supports the role of Na(v)1.8 sodium channels in pathological pain states.
