6-Thio-8-(2'-tetrahydrofurfuryl)thiotheophylline 6493-47-6 NSC98002 Theophylline, 8-(tetrahydrofurfuryl)thio-6-thio- Theophylline, 8-[(tetrahydrofurfuryl)thio]-6-thio- Uric acid, 1,3-dimethyl-6-thio-8-(tetrahydrofurfuryl)thio-