118738-55-9 121477-82-5 122508-78-5 124558-04-9 148021-12-9 2-Mercapto-4,6-dihydroxypyrimidine (VAN) 2-Mercaptobarbituric acid 2-THIOBARBITURIC ACID 2-Thio-4,6-dioxypyrimidine 31645-12-2 4,6(1H,5H)-Pyrimidinedione, 2-mercapto- 4,6(1H,5H)-Pyrimidinedione, dihydro-2-thioxo- 4,6-Dihydroxy-2-thiopyrimidine 504-17-6 5525-79-1 5658-01-5 91759-32-9 AI3-60340 Austranal Barbituric acid, 2-thio- Barbituric acid, 2-thio- (VAN) (8CI) Bathyran Dihydro-2-thioxo-4,6(1H,5H)-pyrimidinedione EINECS 207-985-8 NSC 4733 Thiobarbituric acid USAF EK-660