Clinical data
Routes of
ATC code none
Legal status
Legal status
  • Uncontrolled
Pharmacokinetic data
Biological half-life 1-4 hours
CAS Number 114298-18-9
PubChem (CID) 163925
ChemSpider 143768
UNII 0449O95Z1J YesY
Chemical and physical data
Formula C24H29N5O2
Molar mass 419.519 g/mol
3D model (Jmol) Interactive image

Zalospirone (WY-47,846) is a selective 5-HT1A partial agonist of the azapirone chemical class.[1][2] It was found to be effective in the treatment of anxiety and depression in clinical trials, but a high proportion of subjects dropped out due to side effects and development was subsequently never completed.[3]

See also


  1. Gleeson, S; Barrett, JE (1990). "5-HT1A agonist effects on punished responding of squirrel monkeys". Pharmacology, Biochemistry, and Behavior. 37 (2): 335–7. doi:10.1016/0091-3057(90)90344-H. PMID 1981937.
  2. Singh, A; Lucki, I (1993). "Antidepressant-like activity of compounds with varying efficacy at 5-HT1A receptors". Neuropharmacology. 32 (4): 331–40. doi:10.1016/0028-3908(93)90153-T. PMID 8497336.
  3. Rickels, K; Derivan, A; Kunz, N; Pallay, A; Schweizer, E (1996). "Zalospirone in major depression: a placebo-controlled multicenter study". Journal of Clinical Psychopharmacology. 16 (3): 212–7. doi:10.1097/00004714-199606000-00004. PMID 8784652.

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