英文别名Methanesulfonamide, N-[4-[2-(formylamino)acetyl]-5-methoxy-2-phenoxyphenyl]-; Iguratimod Impurity 12; N-[2-[4-(methanesulfonamido)-2-methoxy-5-phenoxyphenyl]-2-oxoethyl]formamide; N-[4-(N-Formylglycyl)-5-methoxy-2-phenoxyphenyl]methanesulfonamide; formamidomethyl-2-methoxy-4-methanesulfonylamino-5-phenoxy phenylethanone