Synonym
1,3,9-trimethyl-1H-purine-2,6(3H,9H)-dione|1,3,9-trimethyl-3,9-dihydro-1H-purine-2,6-dione|1,3,9-Trimethylxanthine|1,3,9-Trimethylxanthine;9-Methyltheophylline|3,9-Dihydro-1,3,9-trimethyl-1H-purine-2,6-dione|9-Methyltheophylline|EP Impurity C for Caffeine|Isocaffeine|NA|NSC 28332;