6-Thio-8-(beta-N-pyrrolidinoethyl)thiotheophylline 6559-86-0 BRN 1155144 NSC 99657 Theophylline, 8-((2-(1-pyrrolidinyl)ethyl)thio)-6-thio- (8CI) Theophylline, 8-((2-pyrrolidinoethyl)thio)-6-thio- Theophylline, 8-(2-pyrrolidinoethyl)thio-6-thio- Uric acid, 1,3-dimethyl-8-(2-pyrrolidinoethyl)thio-6-thio-