imuracetam imuracetam imuracetam is a drug of the racetam family. it was under development in the 1970s, but was never marketed. imuracetam names preferred iupac name n,n′-bisurea identifiers cas number 67542-41-0 y 3d model (jsmol) interactive image chembl chembl2106342 chemspider 143327 y pubchem cid 163319 unii 972fnv35zm y comptox dashboard (epa) dtxsid20217875 inchi inchi=1s/c11h18n4o3/c16-9-3-1-5-14(9)7-12-11(18)13-8-15-6-2-4-10(15)17/h1-8h2,(h2,12,13,18) ykey: wmkonrfezgahte-uhfffaoysa-n yinchi=1/c11h18n4o3/c16-9-3-1-5-14(9)7-12-11(18)13-8-15-6-2-4-10(15)17/h1-8h2,(h2,12,13,18)key: wmkonrfezgahte-uhfffaoyat smiles o=c(ncn1c(=o)ccc1)ncn2c(=o)ccc2 properties chemical formula c11h18n4o3 molar mass 254.290 g·mol−1 melting point 184.5 °c (364.1 °f; 457.6 k) except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). y verify (what is yn ?) infobox references