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Corynoxeine
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Product Name Corynoxeine
Price: $148 / 20mg
CAS No.: 630-94-4
Catalog No.: CFN98154
Molecular Formula: C22H26N2O4
Molecular Weight: 382.45 g/mol
Purity: >=98%
Type of Compound: Alkaloids
Physical Desc.: Powder
Source: The herbs of Uncaria rhynchophylla.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Download: COA    MSDS    SDF    Manual
Similar structural: Comparison (Web)  (SDF)
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According to end customer requirements, ChemFaces provide solvent format. This solvent format of product intended use: Signaling Inhibitors, Biological activities or Pharmacological activities.
Size /Price /Stock 10 mM * 1 mL in DMSO / $35.9 / In-stock
Other Packaging *Packaging according to customer requirements(100uL/well, 200uL/well and more), and Container use Storage Tube With Screw Cap
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Related Screening Libraries
Size /Price /Stock 10 mM * 100 uL in DMSO / Inquiry / In-stock
10 mM * 1 mL in DMSO / Inquiry / In-stock
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Biological Activity
Description: Corynoxeine is a potent ERK1/2 inhibitor of key PDGF-BB-induced VSMC proliferation and may be useful in the prevention and treatment of vascular diseases and restenosis after angioplasty.
Targets: ERK | MEK | Akt | DNA/RNA Synthesis | MAPK
In vitro:
Planta Med. 2015 Jan;81(1):46-55.
Isolation and identification of twelve metabolites of isocorynoxeine in rat urine and their neuroprotective activities in HT22 cell assay.[Pubmed: 25519834]
IsoCorynoxeine, one of the major alkaloids from Uncaria Hook, shows the effects of lowering blood pressure, vasodilatation, and protection against ischemia-induced neuronal damage. In this paper, the metabolism of isoCorynoxeine was investigated in rats. Twelve metabolites and the parent drug were isolated by using solvent extraction and repeated chromatographic methods, and determined by spectroscopic methods including UV, MS, NMR, and CD experiments.
METHODS AND RESULTS:
Seven new compounds were identified as 11-hydroxyisoCorynoxeine, 5-oxoisocorynoxeinic acid-22-O-β-D-glucuronide, 10-hydroxyisoCorynoxeine, 17-O-demethyl-16,17-dihydro-5-oxoisoCorynoxeine, 5-oxoisocorynoxeinic acid, 21-hydroxy-5-oxoisoCorynoxeine, and oxireno[18, 19]-5-oxoisoCorynoxeine, together with six known compounds identified as isoCorynoxeine, 18,19-dehydrocorynoxinic acid, 18,19-dehydrocorynoxinic acid B, Corynoxeine, isoCorynoxeine-N-oxide, and Corynoxeine-N-oxide. Possible metabolic pathways of isoCorynoxeine are proposed. Furthermore, the activity assay for the parent drug and some of its metabolites showed that isoCorynoxeine exhibited a significant neuroprotective effect against glutamate-induced HT22 cell death at the maximum concentration. However, little or weak neuroprotective activities were observed for M-3, M-6, M-7, and M-10.
CONCLUSIONS:
Our present study is important to further understand their metabolic fate and disposition in humans.
Corynoxeine Description
Source: The herbs of Uncaria rhynchophylla.
Solvent: Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Storage: Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months(2-8C).

Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.

Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com

After receiving: The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Recently, ChemFaces products have been cited in many studies from excellent and top scientific journals

Cell. 2018 Jan 11;172(1-2):249-261.e12.
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Calculate Dilution Ratios(Only for Reference)
1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.6147 mL 13.0736 mL 26.1472 mL 52.2944 mL 65.368 mL
5 mM 0.5229 mL 2.6147 mL 5.2294 mL 10.4589 mL 13.0736 mL
10 mM 0.2615 mL 1.3074 mL 2.6147 mL 5.2294 mL 6.5368 mL
50 mM 0.0523 mL 0.2615 mL 0.5229 mL 1.0459 mL 1.3074 mL
100 mM 0.0261 mL 0.1307 mL 0.2615 mL 0.5229 mL 0.6537 mL
* Note: If you are in the process of experiment, it's need to make the dilution ratios of the samples. The dilution data of the sheet for your reference. Normally, it's can get a better solubility within lower of Concentrations.
Protocol
Kinase Assay:
Biol Pharm Bull. 2008 Nov;31(11):2073-8.
Corynoxeine isolated from the hook of Uncaria rhynchophylla inhibits rat aortic vascular smooth muscle cell proliferation through the blocking of extracellular signal regulated kinase 1/2 phosphorylation.[Pubmed: 18981576]
The proliferation of vascular smooth muscle cells (VSMCs) induced by injury to the intima of arteries is an important etiologic factor in vascular proliferative disorders such as atherosclerosis and restenosis. Uncaria rhynchophylla is traditional Chinese herb that has been applied to the treatment of convulsive disorders, such as epilepsy, in China.
METHODS AND RESULTS:
In the present study, we examined whether Corynoxeine exerts inhibitory effects on platelet-derived growth factor (PDGF)-BB-induced rat aortic VSMC proliferation and the possible mechanism of such effects. Pre-treatment of VSMCs with Corynoxeine (5-50 microM) for 24 h resulted in significant decreases in cell number without any cytotoxicity; the inhibition percentages were 25.0+/-12.5, 63.0+/-27.5 and 88.0+/-12.5% at 5, 20 and 50 microM, respectively. Also, Corynoxeine significantly inhibited the 50 ng/ml PDGF-BB-induced DNA synthesis of VSMCs in a concentration-dependent manner without any cytotoxicity; the inhibitions were 32.8+/-11.0, 51.8+/-8.0 and 76.9+/-7.4% at concentrations of 5, 20 and 50 microM, respectively. Pre-incubation of VSMCs with Corynoxeine significantly inhibited PDGF-BB-induced extracellular signal-regulated kinase 1/2 (ERK1/2) activation, whereas Corynoxeine had no effects on mitogen-activated protein kinase (MAPK/ERK)-activating kinase 1 and 2 (MEK1/2), Akt, or phospholipase C (PLC)gamma1 activation or on PDGF receptor beta (PDGF-Rbeta) phosphorylation.
CONCLUSIONS:
These results suggest that Corynoxeine is a potent ERK1/2 inhibitor of key PDGF-BB-induced VSMC proliferation and may be useful in the prevention and treatment of vascular diseases and restenosis after angioplasty.
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