Formulation: A crystalline solid
Formal Name: N-(3-chlorophenyl)-N′-(4,5-dihydro-1-methyl-4-oxo-1H-imidazol-2-yl)-urea, monohydrate
Purity: ≥98%
Formula Markup: C11H11ClN4O2 • H2O
Formula Weight: 284,7
Shelf life (days): 1460
CAS Number: 63540-28-3
Notes: Fenobam is a noncompetitive antagonist and inverse agonist of metabotropic glutamate receptor 5 (mGluR5) that binds to an allosteric site.{52400} It inhibits intracellular calcium mobilization induced by the glutamate analog quisqualate (Item No. 20211) in HEK293 cells expressing the human receptor (IC50 = 58 nM) and inhibits basal activity of mGluR5 in a cell-based assay (IC50 = 84 nM).{52400} Fenobam (10 and 30 mg/kg) reduces stress-induced hyperthermia in mice and increases drinking time in the Vogel conflict test in rats when administered at a dose of 30 mg/kg, indicating anxiolytic-like activity. It induces analgesia in the formalin test in mice when administered at a dose of 30 mg/kg.{52401}