Ouabain (11018-89-6) is a selective inhibitor of Na+ K+-ATPase isolated from Strophanthus gratus1. Endogenous ouabain is found in human circulation2. Displays cardiotonic and diuretic activity. May be used to induce hypertensive rat model3. Cell permeable and active in vivo.
1) Silva et al. (2012), New insights into the regulation of Na+,K(+)-ATPase by ouabain; Int. Rev. Cell. Mol. Biol., 294 99
2) Dvela et al. (2012), Endogenous ouabain regulates cell viability; Am. J. Physiol. Cell, Physiol., 302 C442