. . . . . . . . . . . . . . . . . . . . "Potassium Canrenoate"@en . . . . . . . . . "withdrawn"@en . . . "U.S. Patent 2,900,383."@en . . . "approved"@en . . "2181-04-6"@en . "Potassium canrenoate, the potassium salt of canrenoic acid, is an aldosterone antagonist. Like spironolactone, it is a prodrug, which is metabolized to canrenone in the body."@en . .