actisomide actisomide actisomide is an antiarrhythmic drug that is made from disopyramide. actisomide names preferred iupac name (4r,4ar)-4--1-methyl-4-phenyl-4,4a,5,6,7,8-hexahydro-3h-pyridopyrimidin-3-one identifiers cas number 96914-39-5 y 3d model (jsmol) interactive image chembl chembl286259 chemspider 5293118 kegg d02762 mesh c051827 pubchem cid 6917898 unii ijq29n87nr y inchi inchi=1s/c23h35n3o/c1-17(2)25(18(3)4)16-14-23(20-11-7-6-8-12-20)21-13-9-10-15-26(21)19(5)24-22(23)27/h6-8,11-12,17-18,21h,9-10,13-16h2,1-5h3/t21-,23-/m1/s1key: qahrrcmlxflztf-fyylogmgsa-n smiles cc1=nc(=o)(2n1cccc2)(ccn(c(c)c)c(c)c)c3=cc=cc=c3 properties chemical formula c23h35n3o molar mass 369.553 g·mol−1 except where otherwise noted, data are given for materials in their standard state (at 25 °c , 100 kpa). infobox references synthesis actisomide synthesis: