(3beta,5beta,12beta)-3-(2-((6-((2,5-Dioxo-1-pyrrolidinyl)oxy)-6-oxohexyl)amino)-2-oxoethoxy)-12,14-dihydroxycard-20(22)-enolide 129273-26-3 178388-83-5 Card-20(22)-enolide, 3-(2-((6-((2,5-dioxo-1-pyrrolidinyl)oxy)-6-oxohexyl)amino)-2-oxoethoxy)-12,14-dihydroxy-, (3beta,5beta,12beta)- HDMA N-Hydroxysuccinimidyl digoxigenin-3-O-methylcarbonyl-epsilon-aminocaproate