2,6-Dithio-8-(N-hexylthio)theophylline 6466-22-4 NSC97990 Theophylline, 2,6-dithio-(8-hexylthio)- Theophylline, 8-(hexylthio)dithio- Uric acid, 1,3-dimethyl-2,6-dithio-(8-hexylthio)-