Synonyms: Barbituricacid, 2-thio- (8CI);1,2,3,4,5,6-Hexahydro-4,6-dioxopyrimidine-2-thione;2-Mercapto-4,6-dihydroxypyrimidine;2-Mercaptobarbituric acid;2-Mercaptopyrimidine-4,6-diol;2-Thio-4,6-dioxypyrimidine;2-Thiobarbituricacid;2-Thiopyrimidine-4,6-diol;Austranal;Bathyran;Hexahydropyrimidine-4,6-dione-2-thione;NSC 4733;Thiobarbituric acid;