Alderon;3-(3-Keto-7.alpha.-acetylthio-17.beta.-hydroxy-4-androsten-17.alph a.-yl)propionic acid lactone;Uractone;Spiro(17H-cyclopenta(a)phenauthrene-17,2-(3H)-furan);Xenalon;Pregn-4-ene-21-carboxylic acid,7-(acetylthio)-17-hydroxy-3-oxo-,?- lactone,(7R,17R)-;Aldactone;17.alpha.-Pregn-4-ene-21-carboxylic acid, 17-hydroxy-7.alpha.-mercapto-3-oxo-, .gamma.-lactone, acetate;Euteberol;Prestwick_449;Pregn-4-ene-21-carboxylic acid, 7-(acetylthio)-17-hydroxy-3-oxo-, gamma-lactone, (7alpha,17alpha)-;Spironolactone A;Urusonin;Verospirone;SC 9420;SC 15983;Spiro(17H-cyclopenta(a)phenanthrene-17,2(5H)-furan), pregn-4-ene-21-carboxylic acid deriv.;Spiro-Tablinen;Spirolang;Spironolactone [BAN:INN:JAN];7-alpha-Acetylthio-3-oxo-17-alpha-pregn-4-ene-21,17-beta-carbolactone;7-alpha-(acetylthio)-17-alpha-hydroxy-3-oxopregn-4-ene-21-carboxylic acid, gamma-lactone (9CI);496916-40-6;Spironolactonum [INN-Latin];Aldactone A;Aldactazide (TN);Spiroctan;3-(3-Oxo-7-alpha-acetylthio-17-beta-hydroxyandrost-4-en-17-beta-yl)propionic acid lactone;7-(Acetylthio)-17-hydroxy-3-oxopregn-4-ene-21-carboxylic acid gamma-lactone;Pregn-4-ene-21-carboxylic acid, 7-(acetylthio)-17-hydroxy-3-oxo-, g-lactone, (7a,17a)-;Verospiron;