英文别名Estazolam Impurity 3; 5-Chloro-2-(formylamino)benzophenone; Formamide, N-(2-benzoyl-4-chlorophenyl)-; 5-Chloro-2-formamidobenzophenone; 5-Chloro-2-formamidobenzophenon; 5-Chlor-2-formylaminobenzophenon; 5-Chlor-2-formamido-benzophenon; 2'-benzoyl-4'-chloroformanilide; N-(2-benzoyl-4-chloro)formamide 
