Name: NBQX
Brand: GlpBio
SKU: GC14156
Availability: InStock
Rating: 5 (26 reviews)

GlpBio Products Cited In Reputable Papers

Nature
610.7931 (2022): 366-372

Nature
618, 1017–1023 (2023)

Cell
183.7 (2020): 1867-1883

Cell Research
31, 1291–1307 (2021)

Cell Research
33, 273–287 (2023)

Cell Research
33, 546–561 (2023)

Molecular Cancer
21.1 (2022): 1-17

Molecular Cancer
21.1 (2022): 1-18

Cancer Cell
39 (2021): 1-16

Cell Host Microbe
30.8 (2022): 1124-1138

Cell Host Microbe
31.5 (2023): 766-780

Cell Host Microbe
31.3 (2023): 418-43

Cell Metabolism
34.2 (2022): 240-255

Ann Rheum Dis
82(4): 533-545 (2023)

Cell Mol Immunol
20, 264–276 (2023)

Adv Funct Mater
33.35 (2023): 2214998

Product Documents

Quality Control & SDS

View current batch:

Purity: >98.00%

Protocol

Cell experiment [1]:
Cell lines	Mouse neocortical neurones
Preparation Method	Cells are continuously superfused with extracellular saline at a rate of 2.5 ml/min. After giga-seal formation the whole cell configuration is obtained by suction.The holding potential is - 60 mV and at the start of each experiment the current is measured continuously for 30 s to ensure a stable baseline. Agonist-containing solutions are delivered to the chamber through a custom-made gravity-driven flowpipe, the tip of which is placed approximately 50 µm from the cell. Application is triggered when the tubing connected to the flowpipe is compressed by a valve controlled by the Pulse software. In general, agonists are applied for 1.5 or 3 s every 45 s. The sample interval during application is 600 µs. After stable responses are obtained, the extracellular saline as well as the agonist-containing solution are replaced by solutions containing NBQX to be tested. NBQX is present until responses of a repeatable amplitude are achieved. Currents are measured at the plateau phase of the responses just before deactivation.
Reaction Conditions	0.1 µM - 100 µM
Applications	NBQX is highly selective. The IC₅₀ value for inhibition of AMPA-evoked inward currents is 0.4 µM for NBQX. While NBQX inhibits NMDA (N-methyl-d-aspartic acid) -induced currents with IC₅₀ value of 60 µM.
Animal experiment [2]:
Animal models	Male Wistar rats
Preparation Method	Rat were exposed to EtOH vapor daily for 4 h such that an average of BAC of 160 mg% was achieved daily. then treated daily with NBQX (5 mg/kg) and evaluated for their behavior approximately 18 h later.
Dosage form	5mg/kg;8days;i.p
Applications	NBQX Attenuate Alcohol-Withdrawal Induced Depression in Male Rats.
References: [1]. Mathiesen C, Varming T, et,al. In vivo and in vitro evaluation of AMPA receptor antagonists in rat hippocampal neurones and cultured mouse cortical neurones. Eur J Pharmacol. 1998 Jul 24;353(2-3):159-67. doi: 10.1016/s0014-2999(98)00401-4. PMID: 9726646. [2].Getachew B, Tizabi Y. Both Ketamine and NBQX Attenuate Alcohol-Withdrawal Induced Depression in Male Rats. J Drug Alcohol Res. 2019;8:236069. doi: 10.4303/jdar/236069. PMID: 31032138; PMCID: PMC6483102.

NBQX is a highly selective and competitive AMPA receptor antagonist. NBQX has neuroprotective and anticonvulsant activity,besides,It has antiepileptic effects. NBQX has little or no affinity for glutamate recognition sites on the NMDA receptor complex^[1-3].

NBQX is highly selective. The IC₅₀ value for inhibition of AMPA-evoked inward currents is 0.4 µM for NBQX. While NBQX inhibits NMDA-induced currents with IC₅₀ value of 60 µM^[4]. NBQX prevents kainic acid (KA)-induced cell death in cultures of rat cerebellar granule cells (CGCs)^[5].

NBQX(5mg/kg; 8days;i.p) attenuate alcohol-withdrawal induced depression in male rats and NBQX (5 and 10 mg/kg) significantly attenuated percent alcohol intake^[6-7]. NBQX(20 mg/kg, i.p.;3days) increased PNNs (WFA), tenascin-R, aggrecan and Neurocan in the medial prefrontal cortex in pentylenetetrazole(PTZ)-treated rats^[8].Although NBQX had previously been shown to be an effective anticonvulsant, it had the opposite effect in TMeV-induced seizure models. Treatment with NBQX(22.5 mg/kg ;i.p;twice daily) significantly increased the number of mice with seizures and significantly increased mortality in the mice^[9].

References:
[1]. Fukushima K, Tabata Y, et,al. Characterization of Human Hippocampal Neural Stem/Progenitor Cells and Their Application to Physiologically Relevant Assays for Multiple Ionotropic Glutamate Receptors. J Biomol Screen. 2014 Sep;19(8):1174-84. doi: 10.1177/1087057114541149. Epub 2014 Jun 30. PMID: 24980597.
[2]. Lippman-Bell JJ, Rakhade SN, et,al.AMPA receptor antagonist NBQX attenuates later-life epileptic seizures and autistic-like social deficits following neonatal seizures. Epilepsia. 2013 Nov;54(11):1922-32. doi: 10.1111/epi.12378. Epub 2013 Oct 1. PMID: 24117347; PMCID: PMC4262152.
[3]. Potschka H, LÖscher W, et,al.LU 73068, a new non-NMDA and glycine/NMDA receptor antagonist: pharmacological characterization and comparison with NBQX and L-701,324 in the kindling model of epilepsy. Br J Pharmacol. 1998 Nov;125(6):1258-66. doi: 10.1038/sj.bjp.0702172. PMID: 9863655; PMCID: PMC1565685.
[4]. Mathiesen C, Varming T, et,al. In vivo and in vitro evaluation of AMPA receptor antagonists in rat hippocampal neurones and cultured mouse cortical neurones. Eur J Pharmacol. 1998 Jul 24;353(2-3):159-67. doi: 10.1016/s0014-2999(98)00401-4. PMID: 9726646.
[5]. Verdaguer E, GarcÍa-JordÀ E, et,al.Kainic acid-induced neuronal cell death in cerebellar granule cells is not prevented by caspase inhibitors. Br J Pharmacol. 2002 Mar;135(5):1297-307. doi: 10.1038/sj.bjp.0704581. PMID: 11877339; PMCID: PMC1573245.
[6]. Getachew B, Tizabi Y. Both Ketamine and NBQX Attenuate Alcohol-Withdrawal Induced Depression in Male Rats. J Drug Alcohol Res. 2019;8:236069. doi: 10.4303/jdar/236069. PMID: 31032138; PMCID: PMC6483102.
[7]. Ruda-Kucerova J, et,al.Both ketamine and NBQX attenuate alcohol drinking in male Wistar rats. Neurosci Lett. 2018 Feb 14;666:175-180. doi: 10.1016/j.neulet.2017.12.055. Epub 2017 Dec 28. PMID: 29288725; PMCID: PMC5805612.
[8]. Chen W, Li YS, et,al.AMPA Receptor Antagonist NBQX Decreased Seizures by Normalization of Perineuronal Nets. PLoS One. 2016 Nov 23;11(11):e0166672. doi: 10.1371/journal.pone.0166672. PMID: 27880801; PMCID: PMC5120819.
[9]. Libbey JE, Hanak TJ, et,al.NBQX, a highly selective competitive antagonist of AMPA and KA ionotropic glutamate receptors, increases seizures and mortality following picornavirus infection. Exp Neurol. 2016 Jun;280:89-96. doi: 10.1016/j.expneurol.2016.04.010. Epub 2016 Apr 9. PMID: 27072529; PMCID: PMC4860063.

Cas No.	118876-58-7	SDF
Chemical Name	6-nitro-2,3-dioxo-1,2,3,4-tetrahydrobenzo[f]quinoxaline-7-sulfonamide
Canonical SMILES	O=S(N)(C1=CC=CC(C1=C2[N+]([O-])=O)=C(C(NC3=O)=C2)NC3=O)=O
Formula	C₁₂H₈N₄O₆S	M.Wt	336.28
Solubility	Soluble in DMSO	Storage	Store at -20°C
General tips	Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month. To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition	Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table

Prepare stock solution
		1 mg	5 mg	10 mg
	1 mM	2.9737 mL	14.8686 mL	29.7371 mL
	5 mM	0.5947 mL	2.9737 mL	5.9474 mL
	10 mM	0.2974 mL	1.4869 mL	2.9737 mL

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In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
3. All of the above co-solvents are available for purchase on the GlpBio website.

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