zalospirone zalospirone zalospirone (wy-47,846) is a selective 5-ht1a partial agonist of the azapirone chemical class. 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. zalospironeclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: uncontrolled pharmacokinetic dataelimination half-life1-4 hoursidentifiers iupac name (3aα,4α,4aβ,6aβ,7α,7aα)-hexahydro-2-(4-(4-(2-pyrimidinyl)-1-piperazinyl)butyl)-4,7-etheno-1h-cyclobutisoindole-1,3(2h)-dione cas number114298-18-9pubchem cid163925iuphar/bps58chemspider143768unii0449o95z1jchemical and physical dataformulac24h29n5o2molar mass419.529 g·mol−13d model (jsmol)interactive image smiles o=c1n(c(=o)412\c=c/43\c=c/23)ccccn6ccn(c5ncccn5)cc6 inchi inchi=1s/c24h29n5o2/c30-22-20-18-6-7-19(17-5-4-16(17)18)21(20)23(31)29(22)11-2-1-10-27-12-14-28(15-13-27)24-25-8-3-9-26-24/h3-9,16-21h,1-2,10-15h2/t16-,17+,18-,19+,20-,21+key:aerlhotuxijqfv-rcpzpfrwsa-n (verify)