Bioactivity | Bretazenil (Ro 16-6028) is a partial agonist at the gamma-aminobutyric acid A (GABAA) receptor-linked benzodiazepine site. Bretazenil is potent benzodiazepine examined, exhibiting an IC50 (concentration at which half-maximal inhibition of specific [35S]TBPS binding occurs) of 6.1 nM. Bretazenil shows an EC50 of 10 nM for recombinant α1β1γ2. Anticonvulsant effects[1][2][3]. | ||||||||||||
In Vivo | Bretazenil (0.001-0.1 mg/kg intraperitoneally 10 min before metrazol; age 7, 12, 18, 25 and 90 days male and female albino rats)suppresses both types of metrazol-induced seizures, minimal (mMS, predominantly clonic with preserved righting ability) and major (MMS, generalized tonic-clonic) in a dose-dependent manner[3]. | ||||||||||||
Name | Bretazenil | ||||||||||||
CAS | 84379-13-5 | ||||||||||||
Formula | C19H20BrN3O3 | ||||||||||||
Molar Mass | 418.28 | ||||||||||||
Appearance | Solid | ||||||||||||
Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
Storage |
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Reference | [1]. Puia G, et al. Molecular mechanisms of the partial allosteric modulatory effects of bretazenil at gamma-aminobutyric acid type A receptor. Proc Natl Acad Sci U S A. 1992;89(8):3620-3624. [2]. Finn DA, et al. A comparison of Ro 16-6028 with benzodiazepine receptor 'full agonists' on GABAA receptor function. Eur J Pharmacol. 1993;247(3):233-237. [3]. Kubová H, et al. Anticonvulsant effects of bretazenil (Ro 16-6028) during ontogenesis. Epilepsia. 1993;34(6):1130-1134. |