sergolexole sergolexole sergolexole (developmental code name ly-281,067) is an ergoline derivative which acts as a selective antagonist of the serotonin 5-ht2 receptors. it has been used for various research applications, but was never developed for medical use. sergolexoleidentifiers iupac name (4-methoxycyclohexyl) (6ar,9r,10ar)-7-methyl-4-propan-2-yl-6,6a,8,9,10,10a-hexahydroindoloquinoline-9-carboxylate cas number108674-86-8 ypubchem cid60262uniij6tga89copcomptox dashboard (epa)dtxsid10148700 chemical and physical dataformulac26h36n2o3molar mass424.585 g·mol−13d model (jsmol)interactive image smiles cc(c)n1c=c2c3(c(cn3c)c(=o)oc4ccc(cc4)oc)c5=c2c1=cc=c5 inchi inchi=1s/c26h36n2o3/c1-16(2)28-15-17-13-24-22(21-6-5-7-23(28)25(17)21)12-18(14-27(24)3)26(29)31-20-10-8-19(30-4)9-11-20/h5-7,15-16,18-20,22,24h,8-14h2,1-4h3/t18-,19?,20?,22-,24-/m1/s1key:rjbjikxtjizonr-ftnaizgwsa-n