sunobinop sunobinop sunobinop (developmental code name imb-115) is a nociceptin receptor partial agonist and opioid receptor pan-antagonist. as of march 2022, it is under investigation for the treatment of insomnia, fibromyalgia, and overactive bladder. sunobinopclinical dataother namesimb-115drug classnociceptin receptor agonistidentifiers iupac name 4-nonanyl]-9-azabicyclononan-3-yl]-3-oxoquinoxaline-2-carboxylic acid cas number1126793-40-5pubchem cid155801560chemspider34950269uniii1x86u5474chemblchembl4650344chemical and physical dataformulac26h33n3o3molar mass435.568 g·mol−13d model (jsmol)interactive image smiles o=c(o)c1=nc=2c=cc=cc2n(c1=o)c3cc4n(c(ccc4)c3)c5cc6cccc(c5)c6 inchi inchi=1s/c26h33n3o3/c30-25-24(26(31)32)27-22-9-1-2-10-23(22)29(25)21-14-18-7-4-8-19(15-21)28(18)20-12-16-5-3-6-17(11-16)13-20/h1-2,9-10,16-21h,3-8,11-15h2,(h,31,32)/t16-,17-,18-,19+,21?/m0/s1key:cotyyzpydjkkis-mcxoouiesa-n