Shelf life (days): 1460.0
Formulation: A crystalline solid
Formal Name: 8-fluoro-5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4]benzodiazepine-3-carboxylic acid, ethyl ester
Purity: ≥98%
Formula Markup: C15H14FN3O3
Formula Weight: 303.3
CAS Number: 78755-81-4
Notes: Flumazenil is a GABAA receptor antagonist (IC50 = 2 nM in a radioligand binding assay using rat cortical synaptosomes).{53225} Flumazenil also acts as a partial agonist of GABAA receptors, decreasing the amplitude of electrically stimulated population spikes in rat hippocampal CA1 pyramidal neurons.{53226} It increases the number of entries into the open arms of the elevated plus maze in high-anxiety BALB/c, but not C57BL/6, mice when administered at doses ranging from 0.1 to 1,000 µg/kg.{53227} Flumazenil (5 and 10 mg/kg) prevents a reduction in burying behavior induced by the GABAA receptor positive allosteric modulator allopregnanolone (Item No. 16930) in ovariectomized rats when administered at doses of 5 and 10 mg/kg.{53228} Formulations containing flumazenil have been used to reverse sedation induced by benzodiazepines and in the treatment of benzodiazepine overdose or withdrawal.