binospirone binospirone binospirone (mdl-73,005-ef) is a drug which acts as a partial agonist at 5-ht1a somatodendritic autoreceptors but as an antagonist at postsynaptic 5-ht1a receptors. it has anxiolytic effects. binospironeclinical dataatc codenoneidentifiers iupac name 8--8-azaspirodecane-7,9-dione cas number102908-59-8 ymesylate: 124756-23-6 ypubchem cid60769chemspider54766uniit3m5d109v5mesylate: 155r3b9k8h ychemblchembl1487115chemical and physical dataformulac20h26n2o4molar mass358.438 g·mol−13d model (jsmol)interactive image smiles o=c1n(c(=o)cc2(c1)cccc2)ccncc3oc4ccccc4oc3 inchi inchi=1s/c20h26n2o4/c23-18-11-20(7-3-4-8-20)12-19(24)22(18)10-9-21-13-15-14-25-16-5-1-2-6-17(16)26-15/h1-2,5-6,15,21h,3-4,7-14h2key:bvmychkqpgeosi-uhfffaoysa-n (verify)