英文别名20,21-Dehydrospironolactone; 20,21-Dehydro Spironolactone; (2'R)-7α-(Acetylthio)-5'H-spiro[androst-4-ene-17,2'-furan]-3,5'-dione; (7alpha,17alpha)-7-(Acetylthio)-17-hydroxy-3-oxopregna-4,20-diene-21-carboxylic acid gamma-lactone; Spironolactone EP Impurity A; delta20-Spironolactone; Spironolactone impurity A; S-((7S,8R,9S,10R,13S,14S,17R)-10,13-dimethyl-3,5'-dioxo-1,2,3,6,7,8,9,10,11,12,13,14,15,16-tetradecahydro-5'H-spiro[cyclopenta[a]phenanthrene-17,2'-furan]-7-yl) ethanethioate 
