pelanserin pelanserin pelanserin (tr2515) is an antagonist of the 5-ht2 and α1-adrenergic receptors. pelanserin names preferred iupac name 3-quinazoline-2,4(1h,3h)-dione identifiers cas number 2208-51-7 y 3d model (jsmol) interactive image chemspider 58898 pubchem cid 65435 unii 6snr96e409 y comptox dashboard (epa) dtxsid60176578 inchi inchi=1s/c21h24n4o2/c26-20-18-9-4-5-10-19(18)22-21(27)25(20)12-6-11-23-13-15-24(16-14-23)17-7-2-1-3-8-17/h1-5,7-10h,6,11-16h2,(h,22,27)key: wpkplsfhhbblry-uhfffaoysa-ninchi=1/c21h24n4o2/c26-20-18-9-4-5-10-19(18)22-21(27)25(20)12-6-11-23-13-15-24(16-14-23)17-7-2-1-3-8-17/h1-5,7-10h,6,11-16h2,(h,22,27)key: wpkplsfhhbblry-uhfffaoyav smiles c1cn(ccn1cccn2c(=o)c3=cc=cc=c3nc2=o)c4=cc=cc=c4 properties chemical formula c21h24n4o2 molar mass 364.449 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references synthesis synthesis: ~86%: 40%: na: patents: use patent: the reaction between isatoic anhydride (1) and 1-(3-aminopropyl)-4-phenylpiperazine (2) with phosgene completed the synthesis of pelanserin (3).