Synonyms: Spiro[androst-4-ene-17,2'(3'H)-furan]-3-one,4',5'-dihydro-7a-mercapto-,acetate (7CI,8CI); 4',5'-Dihydro-7a-mercaptospiro[androst-4-ene-17,2'(3'H)-furan]-3-one acetate; 7a-Acetylthio-20-spirox-4-en-3-one;SC 15983; Spiroxasone; a-Acetylthio-4',5'-dihydrospiro[androst-4-ene-17,2'(3'H-furan]-3-one