cymarin cymarin cymarin (or cymarine) is a cardiac glycoside. plants of the genus apocynum, including apocynum cannabinum and apocynum venetum, contain cymarin. cymarin is a cardiac glycoside and an anti-arrhythmia and cardiotonic agent. cymarinclinical dataother namescymarine; k-strophanthin-α; nsc 7522; strophantin k; wv 90043a; k-strophanthin-αatc codec01ac03 (who) identifiers iupac name (3s,5s,8r,10s,13r,14s,17r)-5,14-dihydroxy-3-((2r,4s,5s,6r)-5-hydroxy-4-methoxy-6-methyltetrahydro-2h-pyran-2-yloxy)-13-methyl-17-(5-oxo-2,5-dihydrofuran-3-yl)hexadecahydro-1h-cyclopentaphenanthrene-10-carbaldehyde cas number508-77-0 ypubchem cid441853chemspider390429 nuniiuk3ls8435echemblchembl1651908 yecha infocard100.007.353 chemical and physical dataformulac30h44o9molar mass548.673 g·mol−13d model (jsmol)interactive imagemelting point148 °c (298 °f) smiles o=c\1oc/c(=c/1)2cc6(o)2(c)cc46cc5(o)c(o3o((o)(oc)c3)c)cc45c=o inchi inchi=1s/c30h44o9/c1-17-26(33)23(36-3)13-25(38-17)39-19-4-9-28(16-31)21-5-8-27(2)20(18-12-24(32)37-15-18)7-11-30(27,35)22(21)6-10-29(28,34)14-19/h12,16-17,19-23,25-26,33-35h,4-11,13-15h2,1-3h3/t17-,19+,20-,21+,22-,23+,25+,26-,27-,28+,29+,30+/m1/s1 ykey:xqcgnurmlwfqjr-znddochdsa-n y ny (what is this?) (verify)