2H-Purin-2-one, 8-(ethylthio)-1,3,6,7-tetrahydro-3,7-dimethyl-6-thioxo- (9CI) 4791-35-9 6-Thio-8-ethylthiotheophylline BRN 1126191 NSC 95862 Theophylline, (8-ethylthio)-6-thio- Theophylline, 8-ethylthio-6-thio- Uric acid, 1,3-dimethyl-8-ethylthio-6-thio-