Oroxylin A

SKU:BHB21300256
Overview
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Oroxylin A (CAS 0480-11-5) is A flavonoid antagonist at the benzodiazepine site of the GABAA receptors. Supplied as Lyophilized powder (purity >98% (HPLC), solubility Up to 50 mM in DMSO. Centrifuge all products before reconstitution (10000 x g...). Commonly used in Neuroscience studies, including binding assays and second-messenger readouts.
Target GABA(A) receptor
Cas No 0480-11-5
concentration 10 nM - 10 µM.
purity >98% (HPLC)
Molecular Formula C16H12O5.
Form Lyophilized powder.
Options selector
Catalog no. Size Quantity
O-160-10MG-1 10 mg
O-160-100MG-1 100 mg
O-160-25MG-1 25 mg
O-160-5MG-1 5 mg
O-160-50MG-1 50 mg
Available Options

Select the variant that best fits your experiment. Availability and lead time may vary by option.

  • Options: Size (5) - 10 mg, 100 mg, 25 mg, 5 mg, 50 mg; Quantity: 1
  • Lead time: typically ships in 1-2 business days; timing may vary by selected option.
  • Storage: After reconstitution: The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods (up to 6 months), small aliquots should be stored at -20°C. We do not recommend storing the product in working solutions for longer than a few days. Avoid multiple freeze-thaw cycles. Storage of solutions: Up to four weeks at 4°C or three months at -20°C. It is recommended to aliquot reconstituted product for storage.
  • Shipping: Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.
  • Upon receipt: store at the recommended temperature as soon as possible.
  • Sales terms and conditions: Please review prior to ordering.
Field Specification
Mfr No O-160
Activity
  • Antagonist
Cas No. 0480-11-5
Concentration 10 nM - 10 µM.
Form Lyophilized powder.
Product Type
  • Biochemicals
  • Small Molecules
Purity >98% (HPLC)
Reconstitution Centrifuge the vial before adding solvent (10,000 x g for 5 minutes) to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Tap the vial to aid in dissolving the lyophilized product. Tilt and gently roll the liquid over the walls of the vial. Avoid vigorous vortexing. Light vortexing for up to 3 seconds is acceptable if needed. For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in sterile water at a concentration of at least 0.1 mg/mL. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. It is recommended to prepare fresh solutions in working buffers just before use. Repeat freeze-thawing may result in loss of activity.
Shipping Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.
Solubility Up to 50 mM in DMSO. Centrifuge all products before reconstitution (10000 x g 5 min).
Source Natural
Storage After reconstitution: The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods (up to 6 months), small aliquots should be stored at -20°C. We do not recommend storing the product in working solutions for longer than a few days. Avoid multiple freeze-thaw cycles. Storage of solutions: Up to four weeks at 4°C or three months at -20°C. It is recommended to aliquot reconstituted product for storage.
Target GABA(A) receptor

Product details

  • Chemical name: 5,7-dihydroxy-6-methoxy-2-phenylchromen-4-one.
  • Also known as: 6-Methoxybaicalein, 5,7-Dihydroxy-6-methoxyflavone
  • CAS number: 0480-11-5
  • Molecular formula: C16H12O5.
  • Purity: >98% (HPLC)
  • Concentration: 10 nM - 10 µM.
  • Form: Lyophilized powder.
  • Solubility: Up to 50 mM in DMSO. Centrifuge all products before reconstitution (10000 x g 5 min).
  • Reconstitution: Centrifuge the vial before adding solvent (10,000 x g for 5 minutes) to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Tap the vial to aid in dissolving the lyophilized product. Tilt and gently roll the liquid over the walls of the vial. Avoid vigorous vortexing. Light vortexing for up to 3 seconds is acceptable if needed. For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in sterile water at a concentration of at least 0.1 mg/mL. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. It is recommended to prepare fresh solutions in working buffers just before use. Repeat freeze-thawing may result in loss of activity.
  • Shipping: Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.
  • Target: GABA(A) receptors
  • Source: Natural
  • Activity: A flavonoid antagonist at the benzodiazepine site of the GABAA receptors. Inhibits [3H]Flunitrazepam binding to rat cerebral cortical membranes (IC50 = 1.09 µM), and selectively abolishes the anxiolytic, myorelaxant and motor incoordination, but not the sedative and anticonvulsant effects elicited by diazepam in mice1.
  • Alternative names: 6-Methoxybaicalein, 5,7-Dihydroxy-6-methoxyflavone

Scientific background

Oroxylin A, also called 6-Methoxybaicalein, is an antagonist at the benzodiazepine site of the GABA(A) receptors.Oroxylin A is an active O-methylated flavone compound that was originally isolated from the medicinal plant Scutellaria baicalensis. Oroxylin A was shown to have multiple functions, including anti-inflammatory, anti-cancer and anti-thrombotic activities. In addition, it has dopamine reuptake inhibitor activity and an inhibitory effect on nuclear factor-κB activation. The compound was used to treat pulmonary infection in Korea, China, and Japan1,2.GABA(A) receptors are members of the Cys-loop superfamily of ligand-gated ion channels. They mediate GABA action, a major inhibitory neurotransmitter, through the central nervous system. The GABAA receptor is considered to be a major target of antiseizure drugs3.

Lead time: 1-2 Business Days

Country of origin: Israel/IL

Applications key

Application key: FC- Flow cytometry, IFC- Indirect flow cytometry, IHC- Immunohistochemistry,LCI- Live cell imaging, Calcium imaging assay,Cell survival assay, Electrophysiology, Neurite outgrowth assay.

Bioassay tested: Yes

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  • Chemistry options: free base/acid vs salt forms, hydrate/solvate preference, stereoisomer control (single enantiomer or racemate), close analogs
  • Add-on labels & handles: D/¹³C/¹⁵N isotopes (LC-MS/internal standards), azide/alkyne or other functional handles for conjugation
  • QC & documentation: standard COA or enhanced analytical pack (HPLC/LC-MS/NMR), chiral purity, residual solvents, water content (KF), method-specific specs
  • Scale & continuity: mg to gram scale, bulk pricing, lot reservation, repeat-order continuity

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