英文别名Ellamod impurity 2; Iguratimod Impurity 2; 3-Acetylamino-7-methylsulfonylamino-6-phenoxy-4H-1-benzopyran-4-one; N-[7-(methanesulfonamido)-4-oxo-6-phenoxychromen-3-yl]acetamide; Iguratimod Impurity E; N-[7-[(Methylsulfonyl)amino]-4-oxo-6-phenoxy-4H-1-benzopyran-3-yl]acetamide; Acetamide, N-[7-[(methylsulfonyl)amino]-4-oxo-6-phenoxy-4H-1-benzopyran-3-yl]-