1H-Purine-2,6-dione, 8-[(3,3-dimethylbutyl)thio]-3,7-dihydro-1,3-dimethyl- 74039-73-9 NSC81473 S-[(3,3-Dimethylbutyl)thio]theophylline Theophylline, S-[(3,3-dimethylbutyl)thio]- WLN: T56 BM DN FNVNVJ CS2X1&1&1 F1 H1