Synonyms: Caffeine, Theophylline-Ethylenediamine Imp. A (EP), Pentoxifylline Imp. F (EP), Dimenhydrinate Imp. C (EP), Theophylline Imp. A (EP), Theophylline-Ethylenediamine Anhydrous Imp. A (EP), Caffeine (8CI), 3,7-Dihydro-1,3,7-trimethyl-1H-purine-2,6-dione, 1,3,7-Trimethyl-2,6-dioxopurine, 1,3,7-Trimethyl-7H-purine-2,6-dione, 1,3,7-Trimethylxanthine, 7-Methyltheophylline, Alert-Pep, Asia migrine, Cafalgine, Cafeina, Caffedrine, Caffein, Cafipel, DHCplus, Dasin, Diurex, Durvitan, Guaranine, Koffein, Mateina, Methyltheobromine, Midron extra, Miudol, NSC 5036, New Cetamol, No-Doz, Palergot-C, Phensal, Refresh’n, Shape Plus, Stay Alert, Stim, Synalgos, Thein, Theine, Tri-Aqua, Vivarin, Wigraine, Dimenhydrinate Impurity C, Pentoxifylline Impurity F, Theophylline Impurity A, Theophylline-Ethylenediamine Impurity A