英文别名Iguratimod Impurity; Iguratimod Impurity 9; Iguratimod Impurity 26; Iguratimod Impurity 20; Iguratimod Impurity 33; N-[3-(Formylamino)-4-oxo-6-phenoxy-4H-1-benzopyran-7-yl]-N-methylmethanesulfonamide; Methanesulfonamide, N-[3-(formylamino)-4-oxo-6-phenoxy-4H-1-benzopyran-7-yl]-N-methyl- 
