jnj-5207852 jnj-5207852 jnj-5207852 is a histamine antagonist selective for the h3 subtype. it has stimulant and nootropic effects in animal studies, and has been suggested as a possible treatment for some memory defects associated with epilepsy. jnj-5207852 itself did not progress to clinical development due to poor pharmacokinetic characteristics, but the related compound jnj-17216498 was in a phase ii clinical trial for the treatment of narcolepsy in 2007. jnj-5207852 names preferred iupac name 1-(3-propyl)piperidine identifiers cas number 398473-34-2 n 3d model (jsmol) interactive image abbreviations jnj-5207852 chembl chembl129542 y chemspider 2046959 y iuphar/bps 1256 mesh jnj-5207852 pubchem cid 2766326 unii 4i9ovb1g7d comptox dashboard (epa) dtxsid70377579 inchi inchi=1s/c20h32n2o/c1-3-12-21(13-4-1)16-7-17-23-20-10-8-19(9-11-20)18-22-14-5-2-6-15-22/h8-11h,1-7,12-18h2 ykey: ptkhfrnhjuljkt-uhfffaoysa-n y smiles o(c1ccc(cc1)cn2ccccc2)cccn3ccccc3 properties chemical formula c20h32n2o molar mass 316.480 g/mol except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). n verify (what is yn ?) infobox references