英文同义词: | Caffeine Impurity 7;1H-Purine-6,8-dione, 7,9-dihydro-2-methoxy-1,7,9-trimethyl-;Caffeine Impurity 7 (Methylliberine);2-Methoxy-1,7,9-trimethyl-7,9-dihydro-1H-purine-6,8-dione;Methylliberine(2-Methoxy-1,7,9-trimethylpurine-6,8-dione);2-methoxy-1,7,9-trimethylpurine-6,8-dione |