2H-Purin-2-one, 8-(ethylthio)-1,3,6,7-tetrahydro-3,7-dimethyl-6-thioxo- 4791-35-9 6-Thio-(8-ethylthio)theophylline NSC95862 Theophylline, (8-ethylthio)-6-thio- Uric acid, 1,3-dimethyl-(8-ethylthio)-6-thio-