(3-beta,5-beta)-5,14-Dihydroxy-3-(2-methyl-1-oxopropoxy)-19-oxocard-20(22)-enolide 4-18-00-03131 (Beilstein Handbook Reference) 5-beta-Card-20(22)-enolide, 19-oxo-3-beta,5,14-trihydroxy-, 3-isobutyrate 63979-70-4 BRN 0066865 CARD-20(22)-ENOLIDE, 5,14-DIHYDROXY-3-(2-METHYL-1-OXOPROPOXY)-19-OXO-, (3-beta,5 Card-20(22)-enolide, 5,14-dihydroxy-3-(2-methyl-1-oxopropoxy)-19-oxo-, (3-beta,5-beta)- Isobutyl-k-strophanthidin Strophanthidin-3-isobutyrate k-Strophanthidin, isobutyl-