Canrenone Alias: 17-hydroxy-3-oxo-17a-pregna-4,6-diene-21-carboxylic acid gamma-lactone CAS NO: 976-71-6 Molecular weight: 340.46 Molecular formula: C22H28O3 Appearance: Pale yellow to pale Green Solid Packing: Foil bag Usage: Aldosterone antagonist. Diuretic