A potent allosteric antagonist of vertebrate GABAA receptors. Blocks GABAA-induced chloride currents in cultured neurons (IC50 = 740nM). Shown to increase blood pressure in spontaneously hypertensive rats and cause convulsion in experimental animals. Also, increases the amplitude of spontaneous colonic contractions.Primary Target:GABA-APrimary Target IC50:740NmSolubility:DMSOStorage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile buffer or ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.