oxapium iodide oxapium iodide oxapium iodide (ciclonium or cyclonium, trade name oxaperan) is an antispasmodic indicated for the treatment of gastritis, gastroduodenal ulcer, enteritis, and other conditions. it is marketed in south korea by dongsung pharmaceuticals. oxapium iodide names iupac name 1--1-methylpiperidin-1-ium iodide other names cyclonium, ciclonium identifiers cas number 6577-41-9 y 3d model (jsmol) interactive image chembl chembl2110800 n chemspider 147726 n kegg d01815 y pubchem cid 168884 unii 682380cg4n n comptox dashboard (epa) dtxsid6046925 inchi inchi=1s/c22h34no2.hi/c1-23(15-9-4-10-16-23)17-21-18-24-22(25-21,19-11-5-2-6-12-19)20-13-7-3-8-14-20;/h2,5-6,11-12,20-21h,3-4,7-10,13-18h2,1h3;1h/q+1;/p-1 nkey: yhewvhonoowlmw-uhfffaoysa-m ninchi=1/c22h34no2.hi/c1-23(15-9-4-10-16-23)17-21-18-24-22(25-21,19-11-5-2-6-12-19)20-13-7-3-8-14-20;/h2,5-6,11-12,20-21h,3-4,7-10,13-18h2,1h3;1h/q+1;/p-1key: yhewvhonoowlmw-rewhxwofae smiles c1(ccccc1)cc2coc(o2)(c3ccccc3)c4=cc=cc=c4. properties chemical formula c22h34ino2 molar mass 471.42 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