6-Thio-8-(2'-aminoethyl)thiotheophylline 6559-88-2 NSC99658 Theophylline, 8-(2-aminoethyl)thio-6-thio- Theophylline, 8-[(2-aminoethyl)thio]-6-thio- Uric acid, 8-(2-aminoethyl)thio-1,3-dimethyl-6-thio-