英文别名8-[(1Z)-2-(3,4-Dimethoxyphenyl)ethenyl]-1,3-diethyl-3,7-dihydro-7-methyl-1H-purine-2,6-dione; Istradefylline Impurity 12; Istradefylline Impurity 2; 1H-Purine-2,6-dione, 8-[(1Z)-2-(3,4-dimethoxyphenyl)ethenyl]-1,3-diethyl-3,7-dihydro-7-methyl-; (Z)-8-(3,4-dimethoxystyryl)-1,3-diethyl-7-methyl-1H-purine-2,6(3H,7H)-dione