F0430 Sigma


≥98% (HPLC), solid

Synonym: N-(3-Chlorophenyl)-N′-(4,5-dihydro-1-methyl-4-oxo-1H-imidazole-2-yl)urea

  • CAS Number 57653-26-6

  • Empirical Formula (Hill Notation) C11H11ClN4O2

  • Molecular Weight 266.68

  •  MDL number MFCD00868019

  •  PubChem Substance ID 24894721



Related Categories Approved Therapeutics/Drug Candidates, Bioactive Small Molecule Alphabetical Index, Bioactive Small Molecules, Cell Biology, Cell Signaling and Neuroscience,
assay   ≥98% (HPLC)
form   solid
color   white
solubility   DMSO: >20 mg/mL
originator   Johnson & Johnson
storage temp.   2-8°C



5, 25 mg in glass bottle

Biochem/physiol Actions

Fenobam is a potent, selective, noncompetitive glutamate mGluR5 receptor antagonist. Fenobam displays inverse agonist properties; blocks mGluR5 constitutive activity in vitro (IC50 = 87 nM, slightly weaker than MPEP). Fenobam acts at an allosteric modulatory site shared with MPEP and binds the mGlu5 receptor with Kd values of 54 and 31 nM for rat and human receptors, respectively. Fenobam belongs to a structurally different class than MPEP; devoid of GABAergic activity and thus typical benzodiazepine-like side effects; displays anxiolytic activity.

Features and Benefits

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This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.

This compound is featured on the Glutamate Receptors (G Protein Family) page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

This compound was developed by Johnson & Johnson. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

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NONH for all modes of transport
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Protocols & Articles


Discover Bioactive Small Molecules for Neuroscience

The nervous system, comprised of the brain and spinal cord (central nervous system, or CNS) and network of nerves that connects the CNS to the rest of the body (peripheral nervous system, or PNS) is ...
Keywords: Bioactive small molecules, Central Nervous System, Diseases, Metabolism, Neurodegenerative Diseases, Neuroscience, Neurotransmission, Neurotransmitters

Glutamate Receptors (G Protein Family)

The existence of G protein-coupled glutamate receptors (also called "??metabotropic" glutamate or mGlu's), belonging to the seven transmembrane spanning superfamily of receptors, was shown definitive...
Keywords: Atomic absorption spectroscopy, Cloning, Gene expression, Ligands, Neurotransmission, Neurotransmitters, Obesity, Parkinson Disease, Schizophrenia, Transduction

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