1H-Purine-2,6-dione, 3,7-dihydro-1,3-dimethyl-7-(2-(methylthio)ethyl)- (9CI) 3736-05-8 5-26-14-00044 (Beilstein Handbook Reference) 7-(beta-Methylthioethyl)theophylline 7-(beta-Metylotioetylo)-teofilina [Polish] BRN 0263350 Theophylline, 7-(2-(methylthio)ethyl)- metet