3-beta,14-Dihydroxy-5-beta-card-20(22)-enolide 3-ester with D-alanine 5-beta-CARD-20(22)-ENOLIDE, 3-beta,14-DIHYDROXY-, 3-(2-AMINOPROPIONATE) (ester), 5-beta-Card-20(22)-enolide, 3-beta,14-dihydroxy-, 3-(2-aminopropionate) (ester), D- 81130-95-2 Digitoxigenin-3-beta-D-alanyl ester