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CTEP structure.png
Systematic (IUPAC) name
Clinical data
Legal status
ATC code ?
PubChem CID 11646823
ChemSpider 9821562
Chemical data
Formula C19H13ClF3N3O 
Molecular mass 391.774 g/mol

CTEP is a research drug developed by Hoffmann-La Roche that acts as a selective allosteric antagonist of the metabotropic glutamate receptor subtype mGluR5, binding with nanomolar affinity and over 1000x selectivity over all other receptor targets tested. In animal studies it was found to have a high oral bioavailability and a long duration of action, lasting 18 hours after a single dose, giving it considerably improved properties over older mGluR5 antagonists such as MPEP and fenobam.[1]


  1. ^ Lindemann L, Jaeschke G, Michalon A, Vieira E, Honer M, Spooren W, Porter R, Hartung T, Kolczewski S, Büttelmann B, Flament C, Diener C, Fischer C, Gatti S, Prinssen EP, Parrott N, Hoffmann G, Wettstein JG. CTEP: a novel, potent, long-acting, and orally bioavailable metabotropic glutamate receptor 5 inhibitor. Journal of Pharmacology and Experimental Therapeutics. 2011 Nov;339(2):474-86. PMID 21849627