6-Thio-8-(beta-N-piperidylethyl)thiotheophylline 6493-46-5 BRN 1156493 NSC 98001 Theophylline, 8-(2-(piperidinoethyl)thio)-6-thio- Uric acid, 1,3-dimethyl-8-(2-(piperidinoethyl)thio)-6-thio-