6-Thio-8-[(2'-pyridylmethyl)thio]theophylline 6493-43-2 NSC97997 Theophylline, 8-[(2-pyridylmethyl)thio]-6-thio- Uric acid, 1,3-dimethyl-8-[(2-pyridylmethyl)thio]-6-thio-