emopamil emopamil emopamil is a calcium channel blocker and a high-affinity ligand of human sterol isomerase. emopamil names iupac name 2-isopropyl-5-(methyl- (2-phenylethyl)amino)- 2-phenylpentanenitrile identifiers cas number 78370-13-5 y 3d model (jsmol) interactive imageinteractive image chembl chembl173809 y chemspider 64360 y kegg c13766 y pubchem cid 71225 unii m514041rf7 y inchi inchi=1s/c23h30n2/c1-20(2)23(19-24,22-13-8-5-9-14-22)16-10-17-25(3)18-15-21-11-6-4-7-12-21/h4-9,11-14,20h,10,15-18h2,1-3h3 ykey: dwawdsvkauwfhc-uhfffaoysa-n yinchi=1/c23h30n2/c1-20(2)23(19-24,22-13-8-5-9-14-22)16-10-17-25(3)18-15-21-11-6-4-7-12-21/h4-9,11-14,20h,10,15-18h2,1-3h3key: dwawdsvkauwfhc-uhfffaoyak smiles n#cc(c1ccccc1)(c(c)c)cccn(ccc2ccccc2)ccc(c)c(cccn(c)ccc1=cc=cc=c1)(c#n)c2=cc=cc=c2 properties chemical formula c23h30n2 molar mass 334.50 g/mol 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 structure emopamil's structure consists of an organic amino compound, nitrile compound and a member of two benzene rings. applications emopamil also known as emp is a phenylalkylamine and inhibitor of 5-hydroxytryptamine 5-ht2 receptors. emp includes a chiral quaternary carbon center, and research has indicated that its optical isomers have different biological effects. it interacts in an extracellular site of the nerve cell to inhibit calcium channel responses while other phenylalkylamines act at an intracellular site. the interaction site of emopamil suggests to its greater neuroprotective efficacy in research related to ischaemia.