IODIXANOL IMPURITY H 5-[ACETYL[3-[ACETYL[3-[[3-[3-[ACETYL[3,5-BIS[(2,3-DIHYDROXYPROPYL)CARBAMOYL]-2,4,6-TRIIODOPHENYL]AMINO]-2-HYDRO XYPROPOXY]-2-HYDROXYPROPYL]CARBAMOYL]-5-[(2,3-DIHYDROXYPROPYL)CARBAM 1 * 10 mg