英文别名Sildenafil Impurity Ⅴ-1; Sildenafil Impurity IV-1; o-Ethoxybenzoyl Chloride; Benzoyl chloride, 2-ethoxy- (9CI); 2-Aethoxy-benzoylchlorid; 2-ethoxybenzoic acid chloride; 2-Aethoxy-benzoesaeure-chlorid; 2-ethoxy-benzoyl chloride; o-ethoxy benzoyl chloride; Sildenafil Impurity 58 
