Synonyms: 2,4(1H,3H)-Quinazolinedione,2-thio- (6CI,7CI,8CI); 2,3-Dihydro-2-thioxoquinazolin-4(1H)-one;2-Mercapto-3H-quinazolin-4-one; 2-Mercapto-4(3H)-quinazolinone;2-Mercapto-4-quinazolinol; 2-Mercaptoquinazolin-4-one;2-Thio-2,4(1H,3H)-quinazolinedione; 2-Thio-4-oxo-1,2,3,4-tetrahydroquinazoline;2-Thioxo-4-quinazolinone