1,3-Dimethyl-(8-methylthio)-2-thioxouric acid 1784-69-6 2-Thio-(8-methylthio)theophylline 6H-Purin-6-one, 1,2,3,7-tetrahydro-1,3-dimethyl-8-(methylthio)-2-thioxo- NSC95856 Theophylline, (8-methylthio)-2-thio- Uric acid, 1,3-dimethyl-(8-methylthio)-2-thio-