Catalog Number: 3817
Chemical Name: 3-(1,1-Dimethylethyl)-7-(5-methyl-3-isoxazolyl)-2-[(1-methyl-1H-1,2,4-triazol-5-yl)methoxy]-pyrazolo[1,5-d][1,2,4]triazine
Biological Activity
GABAA receptor inverse agonist selective for the α5-subtype (EC50 = 3 nM). Exhibits affinity at benzodiazepine binding site of recombinant human GABAA receptors (Ki values are 0.77 nM, 0.83 nM, 0.85 nM and 1.4 nM for α3-, α1-, α2-, and α5-containing respectively). Increases long-term potentiation (LTP) in mouse hippocampal slices. Exhibits no anxiogenic or proconvulsant activity.
Technical Data
  • M.Wt:
    368.39
  • Formula:
    C17H20N8O2
  • Solubility:
    Soluble to 100 mM in DMSO and to 10 mM in ethanol
  • Purity:
    >98%
  • Storage:
    Store at +4°C
  • CAS No:
    342652-67-9
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis. All Tocris products are intended for laboratory research use only.
Additional Information
Licensing Caveats:
Manufactured and sold under license from Merck & Co., Inc. for use solely for preclinical research purposes (ie: not for administration to or other use in humans)
Background References
  1. An orally bioavailable, functionally selective inverse agonist at the benzodiazepine site of GABAA α5 receptors with cognition enhancing properties.
    Chambers et al.
    J.Med.Chem., 2004;47:5829
  2. In vitro and in vivo properties of 3-tert-butyl-7-(5-methylisoxazol-3-yl)-2-(1-methyl-1H-1,2,4-triazol-5-ylmethoxy)-pyrazolo[1,5-d]-[1,2,4]triazine (MRK-016), a GABAA receptor α5 subtype-selective inverse agonist.
    Atack et al.
    J.Pharmacol.Exp.Ther., 2009;331:470

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