17.alpha.-Pregn-4-ene-21-carboxylic acid, 17-hydroxy-7.alpha.-mercapto-3-oxo-, .gamma.-lactone acetate 17.alpha.-Pregn-4-ene-21-carboxylic acid, 17-hydroxy-7.alpha.-mercapto-3-oxo-, .gamma.-lactone, acetate 3-(3-Keto-7.alpha.-acetylthio-17.beta.-hydroxy-4-androsten-17.alpha.-yl)propionic acid lactone 52-01-7 7-.alpha.-(acetylthio)-17-.alpha.-hydroxy-3-oxopregn-4-ene-21-carboxylic acid, .gamma.-lactone Acelat Aldactone Aldactone A Alderon Dira Euteberol Melarcon NSC150399 Pregn-4-ene-21-carboxylic acid, 7-(acetylthio)-17-hydroxy-3-oxo-, .gamma.-lactone, (7.alpha.,17.alpha.)- SC 9420 Spiresis Spiridon Spiro-Tablinen Spiro[17H-cyclopenta[a]phenauthrene-17,2'-(3'H)-furan] Spiroctan Spirolactone Spirolang Spirone Spironocompren Spironolactone Spironolactone A Uractone Urusonin Verospiron Verospirone WLN: L E5 B666 FX OV MUTJ A1 E1 KSV1 F-& CT5VOXTJ Xenalon component of Aldactazide