hydrophobic agents , e.g . methanol , ethanol , isopropanol , acetone and dioxane were shown to induce irreversible inactivation of na+ , k+-adenosine triphosphatase beginning with their concentrations of 20 to 35 % , whereas dimethyl sulphoxide exerted similar effect only at concentration of 50 % and higher .
C0001963
methanol
C0001962
ethanol