Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 20830-75-5, Whether you call it Digoxin or 3Beta-[2 -6-Didesoxy-O-Beta-D-ribohexopyranosyl-(1->4)-2 -6-didesoxy-O-Beta-D-ribohexopyranosyl-(1->4)-2 -6-didesoxy-Beta-D-ribohexopyranosyloxy]-12Beta -14-dihydroxy-5Beta -14Beta-card-20(22)-enolid you can be assured the products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.