英文别名Diphenylglycoluril; 3a,6a-Diphenyloctahydroimidazo[4,5-d]imidazole-2,5-dione; 3a,4,6,6a-Tetrahydro-3a,6a-diphenylimidazo[4,5-d]imidazole-2,5(1H,3H)-dione; 3a,6a-Diphenyl-3a,4,6,6a-tetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione; 3a,6a-Diphenylglycoluril; 3a,6a-Diphenylglycouril; 3a,6a-Diphenylperhydroimidazo[4,5-d]imidazole-2,5-dione; Phenytoin EP impurity D 
