U 93631

SKU:BHB21300363
Overview
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U 93631 (CAS 152273-12-6) is a ligand at the picrotoxin site of GABA(A) receptors, allosterically antagonizing GABA-induced Cl- currents by decreasing single-channel open probability1 and accelerating current decay (Kd = 2 µM)2. Supplied as Lyophilized powder (purity >99%, solubility Soluble in DMSO. Centrifuge before use (10000 x g, 5 min)). Commonly used in Neuroscience studies, including patch-clamp electrophysiology and ion channel screening.
Target GABA(A) receptor, 5-HT3A receptor
Cas No 152273-12-6
concentration 1-10 µM.
purity >99%
Molecular Formula C17H21N3O2.
Form Lyophilized powder.
Options selector
Catalog no. Size Quantity
U-120-10MG-1 10 mg
U-120-25MG-1 25 mg
U-120-5MG-1 5 mg
U-120-50MG-1 50 mg
Available Options

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

  • Options: Size (4) - 10 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: Storage of solutions: Up to three months at -20°C.
  • 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 U-120
Activity
  • Antagonist
Cas No. 152273-12-6
Concentration 1-10 µM.
Form Lyophilized powder.
Product Type
  • Biochemicals
  • Small Molecules
Purity >99%
Reconstitution Soluble in DMSO. Centrifuge before use (10000 x g, 5 min).
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 Soluble in DMSO. Centrifuge before use (10000 x g, 5 min).
Source Synthetic
Storage Storage of solutions: Up to three months at -20°C.
Target GABA(A) receptor, 5-HT3A receptor

Product details

  • Chemical name: tert-butyl 4,4-dimethyl-5H-imidazo[1,5-a]quinoxaline-3-carboxylate.
  • CAS number: 152273-12-6
  • Molecular formula: C17H21N3O2.
  • Purity: >99%
  • Concentration: 1-10 µM.
  • Form: Lyophilized powder.
  • Solubility: Soluble in DMSO. Centrifuge before use (10000 x g, 5 min).
  • Reconstitution: Soluble in DMSO. Centrifuge before use (10000 x g, 5 min).
  • 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), 5-HT3A receptors
  • Source: Synthetic
  • Activity: U 93631 is a ligand at the picrotoxin site of GABA(A) receptors, allosterically antagonizing GABA-induced Cl- currents by decreasing single-channel open probability1 and accelerating current decay (Kd = 2 µM)2. It is also an antagonist of 5-HT3A receptors (IC50 = 50 µM)3.

Scientific background

U 93631 is a synthetic compound that acts as an antagonist of the gamma-aminobutyric acid type A GABA(A) receptors and of 5-hydroxytryptamine type 3A (5-HT3A) receptors, displaying an IC50 of 50 µM for the serotonin receptor4. The compound accelerates the decay of GABA induced currents through an allosteric manner. The properties of U 93631 are shown to be analogous to those of picrotoxin and both share overlapping binding domains1,2.GABA(A) receptors and 5-HT3 (serotonin-gated) receptor channels are members of the Cys-loop superfamily of ligand-gated ion channels. These receptors are expressed throughout the central and peripheral nervous systems and mediate a variety of important physiological functions. GABA(A) receptors mediate the actions of GABA, a major inhibitory neurotransmitter. 5-HT3 receptors mediate those of serotonin3.

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

Need this compound in a format that drops straight into your assay? We can tailor formulation, chemistry, and documentation so your results stay consistent across runs and re-orders.

  • Format options: solid or pre-dissolved solution (choose solvent), target concentration, aliquots, light/moisture-protected packaging
  • 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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