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Zalospirone: Wikis

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Systematic (IUPAC) name
CAS number 114298-18-9
ATC code none
PubChem 163925
Chemical data
Formula C 24H29N5O2  
Mol. mass 419.519 g/mol
SMILES eMolecules & PubChem
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.  ?
Legal status
Routes  ?

Zalospirone (WY-47,846) is a psychoactive drug and research chemical of the piperazine and azapirone chemical classes. It acts as a selective 5-HT1A partial agonist and produces anxiolytic and antidepressant effects.[1][2] Zalospirone 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]


  1. ^ Gleeson S, Barrett JE. 5-HT1A agonist effects on punished responding of squirrel monkeys. Pharmacology, Biochemistry and Behaviour. 1990 Oct;37(2):335-7. PMID 1981937
  2. ^ Singh A, Lucki I. Antidepressant-like activity of compounds with varying efficacy at 5-HT1A receptors. Neuropharmacology. 1993 Apr;32(4):331-40. PMID 8497336
  3. ^ Rickels K, Derivan A, Kunz N, Pallay A, Schweizer E. Zalospirone in major depression: a placebo-controlled multicenter study. Journal of Clinical Psychopharmacology. 1996 Jun;16(3):212-7. PMID 8784652

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