Synonyms: Isobutyl-k-strophanthidin;k-Strophanthidin, isobutyl-;Strophanthidin-3-isobutyrate;BRN 0066865;5-beta-Card-20(22)-enolide, 19-oxo-3-beta,5,14-trihydroxy-, 3-isobutyrate;(3-beta,5-beta)-5,14-Dihydroxy-3-(2-methyl-1-oxopropoxy)-19-oxocard-20(22)-enolide;Card-20(22)-enolide, 5,14-dihydroxy-3-(2-methyl-1-oxopropoxy)-19-oxo-, (3-beta,5-beta)-;AC1L2EYR;LS-52438;[(3S,5S,10S,13R,14S,17R)-10-formyl-5,14-dihydroxy-13-methyl-17-(5-oxo-2H-furan-3-yl)-2,3,4,6,7,8,9,11,12,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] 2-methylpropanoate;63979-70-4