6-Thio-8-(2'-tetrahydrofurfuryl)thiotheophylline 6493-47-6 BRN 1150036 NSC 98002 Theophylline, 8-(tetrahydrofurfuryl)thio-6-thio- Uric acid, 1,3-dimethyl-6-thio-8-(tetrahydrofurfuryl)thio-