Clinical data
ATC code none
CAS Number 579475-18-6 YesY
PubChem (CID) 9852175
Chemical and physical data
Formula C31H35F7N4O2
Molar mass 628.623 g/mol
3D model (Jmol) Interactive image

Orvepitant (GW823296) is a drug developed by GlaxoSmithKline which acts as a selective antagonist for the NK1 receptor.[1] It was under development as a potential antidepressant drug, and early stage human clinical trials showed it to have some antidepressant effects, though not with sufficient efficacy to justify further development for this application. It was however considered a successful proof of concept for NK1 antagonists as potential antidepressants, and efforts are continuing to find more potent compounds which might be more effective.[2]


  1. Di Fabio R, Alvaro G, Braggio S, Carletti R, Gerrard PA, Griffante C, Marchioro C, Pozzan A, Melotto S, Poffe A, Piccoli L, Ratti E, Tranquillini E, Trower M, Spada S, Corsi M. Identification, biological characterization and pharmacophoric analysis of a new potent and selective NK1 receptor antagonist clinical candidate. Bioorg Med Chem. 2013 Nov 1;21(21):6264-73. doi: 10.1016/j.bmc.2013.09.001. PMID 24075145
  2. Ratti E, Bettica P, Alexander R, Archer G, Carpenter D, Evoniuk G, Gomeni R, Lawson E, Lopez M, Millns H, Rabiner EA, Trist D, Trower M, Zamuner S, Krishnan R, Fava M. Full central neurokinin-1 receptor blockade is required for efficacy in depression: evidence from orvepitant clinical studies. J Psychopharmacol. 2013 May;27(5):424-34. doi: 10.1177/0269881113480990. PMID 23539641

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