ChEBI: Ouabain(1-) is conjugate base of ouabain; major species at pH 7.3. It is a cardenolide glycoside, an 11alpha-hydroxy steroid, a 14beta-hydroxy steroid and a 5beta-hydroxy steroid. It is a conjugate base of an ouabain. ChEBI: Ouabain(1-) is an organic anion that is the conjugate base of ouabain resulting from the deprotonation of the furanone moiety; major species at pH 7.3. It is a conjugate base of an ouabain.